President-elect Donald Trump is threatening tariffs against a bloc of countries when he assumes office as part of his anticipated effort to reinforce oil and gas production in the U.S.

Trump, in a Truth Social post, said that he told the European Union that if it doesn't begin to import more U.S. oil and gas, it will be faced with tariffs under his upcoming presidency.

"I told the European Union that they must make up their tremendous deficit with the United States by the large scale purchase of our oil and gas," Trump wrote. "Otherwise, it is TARIFFS all the way!!!"

Throughout his presidential campaign, Trump vowed to restore energy dominance by bolstering the production of American-made oil and natural gas. Specifically, Trump has revealed that he plans to expand fracking and lift President Joe Biden's pause on new liquefied natural gas (LNG) export permits. 

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Trump's latest tariff threat comes amid a number of warnings against several countries, including China, Mexico, and Canada, if they don't act to secure the border and stop drug trafficking.

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Trump said he would impose 25% tariffs on all Canadian and Mexican exports, unless the countries work to stop the flow of illegal immigration and illicit drugs coming into the U.S.

After Trump's proposed tariff against Canada, Ontario Premier Doug Ford threatened to cut off energy and critical mineral exports to the U.S. if the incoming president implements such a tariff on all Canadian products. However, Trump was unfazed by the threat, saying, "That's okay if he does that."

Trump has reportedly engaged in "very productive" conversations with Canadian Prime Minister Justin Trudeau since threatening a new tax.

The PM traveled to Mar-a-Lago to meet with the incoming president, where Trudeau reportedly told Trump he couldn't levy the tariff, because it would kill the Canadian economy completely, Fox News previously reported.

Trump then suggested to Trudeau that Canada become the 51st state, which, according to sources, reportedly caused the prime minister and others to laugh nervously.

Fox News' Bret Baier and Greg Wehner contributed to this report.

The Biden administration has made tightening efficiency standards for household appliances a target as he's built out his climate agenda over the past four years. 

"Making common household appliances more efficient is one of the most effective ways to slash energy costs and cut harmful carbon emissions," Secretary of Energy Jennifer Granholm, who has spearheaded efforts to push households to adopt green energy alternatives, said in a statement. 

However, energy experts and manufacturers have warned that the Biden administration's regulations would lead to more expensive household appliances that are far less effective than current models.

"What these mandates – what these standards do is enforce a level of efficiency that doesn't make sense," said Ben Lieberman, a senior fellow at the Competitive Enterprise Institute. "And they compromise product quality. We've already seen this to an extent with the cost of clothes washer standards." 

The Department of Energy (DOE) introduced a final rule in February imposing stricter energy standards for residential clothes washers (RCWs), such as washing machines and clothes dryers. 

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Under the regulations, certain less-efficient models of washers and dryers would be barred from being sold, according to DOE. 

The department projected that the energy standards would collectively save American households $2.2 billion per year on utility bills while reducing nearly 71 million metric tons of "dangerous carbon dioxide emissions" over the next three decades. 

However, the Association of Home Appliance Manufacturers argued that DOE's washing machine regulations "would have a disproportionate, negative impact on low-income households" by eliminating cheaper appliances from the market. 

"Despite misleading claims to the contrary, these proposals are intended for nothing more than promoting innovation and keeping money in the pockets of Americans everywhere without sacrificing the reliability and performance that consumers expect and rely on," a spokesperson for the Department of Energy told Fox News Digital. "As evidenced in the Department’s testing and analysis, the proposed standards would not reduce product performance or negatively impact cleaning ability or cycle time."

In 2023, the EPA finalized a rule to accelerate a transition to more advanced refrigeration and cooling technologies that don't use hydrofluorocarbons (HFCs), and proposed a second rule to manage HFCs in existing products. HFCs are chemicals common in household appliances, such as refrigeration, heating, and air conditioning units. 

The rule, set to go into effect in 2025, aims to phase out HFCs to achieve an 85% reduction by 2036.

But manufacturers reportedly privately predicted that the regulation would increase prices up to 20%, according to the Competitive Enterprise Institute.

In February 2023, the DOE issued a proposal to target gas-powered stovetops, which was set to take effect in 2027 and affect 50% of current gas stove models. 

Under the 2023 proposal, DOE would have banned the future sale of gas stoves that consume more than 1,204 thousand kBtu per year. 

Restaurant owners have fumed over potential gas stove ban regulations.

"The majority of New York City restaurants use gas. It’s the most common stove in a high-volume kitchen," Peter Petti, executive chef at Upper East Side restaurant, Sojourn, told the New York Post. "Gas lets us do our job efficiently."

After facing pushback from Republicans and consumer advocacy groups, the DOE issued its final regulations, which will impact 3% of gas stove models, rather than the initial 50%.

The Biden administration doubled efficiency standards for light bulbs, requiring manufacturers to raise the levels for common light bulbs from 45 lumens per watt to more than 120 lumens per watt, a nearly 170% increase. Only LED bulbs will be able to comply with the standards, not compact fluorescent bulbs.

The DOE suggested that the regulations will slash greenhouse gas pollution by cutting 70 million metric tons of carbon dioxide over the next three decades.

When it takes effect in 2028, the rule will knock most currently available LEDs off the market and increase the average price of the remaining ones from $2.98 to an estimated $5.68, an increase of $2.70 per bulb, according to Lieberman.

Results from a Residential Energy Consumption Survey indicate that fewer than half of households reported using LEDs as their primary or exclusive lighting source.

The DOE implemented efficiency regulations to prohibit new non-condensing gas furnaces by 2028, by requiring that non-weatherized gas furnaces achieve an annual fuel utilization efficiency of 95%.

The American Gas Association, American Public Gas Association, National Propane Gas Association and manufacturer Thermo Products filed a lawsuit against DOE, claiming that costs could increase for 30% of senior-only households, 26% of low-income households and 27% of small business consumers if the regulation were to go into effect.

"Yesterday, the Biden administration finalized a rule that would effectively ban natural gas furnaces and other gas furnaces that are found in more than half of U.S. households," AGA Vice President of Energy Markets, Analysis, and Standards Richard Meyer told The National Desk in a statement. "In five years, around Christmas 2028, if you have to replace your gas furnace, you may be saddled with hundreds if not thousands of dollars of additional costs to upgrade that equipment to comply with this rule."

The Biden administration amended its energy conservation standards, putting into effect stricter energy standards for ceiling fans.

According to an analysis from the DOE, the new rules would save households about $39 over the lifespan of the new energy-efficient fan, FOX Business previously reported.

The regulation faced backlash from the House Small Business Committee, which claimed in a letter to the DOE secretary that it could put between 10% and 30% of small business ceiling fan manufacturers out of business.

Biden's appliance regulations could soon be in jeopardy, as President-elect Donald Trump is expected to overturn much of the current administration's climate agenda when he assumes the presidency in 2025.

Fox News' Matteo Cina contributed to this report.

FIRST ON FOX: A controversial judicial advocacy organization funded by left-wing nonprofits continues to work with judges and experts involved in climate change litigation despite publicly downplaying the extent of those connections.

"CJP doesn’t participate in litigation, support or coordinate with any parties in litigation, or advise judges on how they should rule in any case," the Environmental Law Institute Climate Judiciary Project President Jordan Diamond wrote in a recent letter to The Wall Street Journal in response to criticism of the project. 

The Washington, D.C.-based Environmental Law Institute (ELI) created the Climate Judiciary Project (CJP) in 2018, establishing a first-of-its-kind resource to provide "reliable, up-to-date information" about climate change litigation, according to the group. The project's reach has extended to various state and federal courts, including powerful appellate courts, and comes as various cities and states pursue high-profile litigation against the oil industry.

A Fox News Digital review shows that several CJP expert lawyers and judges have close ties to the curriculum and are deeply involved in climate litigation.

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Princeton University professor Michael Oppenheimer contributed to the CJP curriculum and presented "Evidence of Change: Judging Climate Litigation" with CJP’s Sandra Nichols Thiam at the 2022 Ninth Circuit Judicial Conference July 20, 2022. 

Oppenheimer has a long history of filing climate-related amicus briefs from 2019-2022 in litigation across several states.

Robin Kundis Craig, a professor at the University of Utah's Law School, wrote a module for CJP in 2022 and has also filed several amicus briefs showing she is active in court cases. 

One example occurred in 2023, when Craig is listed on an order granting legal scholars' request to file amicus, which was signed by Justice Mark Recktenwald, who, Fox News Digital previously reported, quietly disclosed last year that he presented for an April course in collaboration with the Environmental Law Institute Climate Judiciary Project. 

Recktenwald co-presented at a December 2022 National Judicial College webinar sponsored by CJP, "Hurricanes in a Changing Climate and Related Litigation." In 2023, he co-presented with Professor Robert DeConto at a National Judicial College seminar, "Rising Seas and Litigation: What Judges Need to Know about Warming-Driven Sea-Level Rise."

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In October 2023, Recktenwald’s Hawaii Supreme Court denied an appeal from oil companies to toss a Honolulu climate misinformation suit.

Craig also filed an amicus in Hawaii state court in July 2022, where an order was signed by Judge Jeffrey Crabtree allowing the brief to be filed. Crabtree is a member of the National Judicial College Curriculum Development Committee, which creates curricula for "Environmental Law Essential for the Judiciary."

"Don’t underestimate the importance of the role of state court judges in environmental law," the curriculum's website states.

Ann Carlson, who joined the Biden administration in 2021, served on ELI's board of directors for years while also "providing pro bono consulting" for Sher Edling, an eco law firm representing a number of jurisdictions, on litigation against oil companies, financial disclosures showed. Sher Edling counsel Michael Burger has also participated in multiple ELI events, and former Sher Edling lawyer Meredith Wilensky was previously an ELI Public Interest Law Fellow.

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Burger is the executive director of the Sabin Center for Climate Change Law and an ELI presenter who has filed amicus briefs in support of plaintiffs in climate cases across the United States. 

UCLA’s Emmett Institute on Climate Change and the Environment hosted a talk in October 2017 with Sher Edling’s Vic Sher, "Suing Over Climate Change Damages: The First Wave of Climate Lawsuits." Ann Carlson was the moderator for that discussion.

John Dernbach, listed as an expert on CJP’s website, filed an amicus brief in 2019 as part of a brief of legal scholars in support of plaintiffs in City of Oakland v BP. 

"Judges attending Climate Judiciary Project events are advised that they are walking into a left-wing lobbying shop," American Energy Institute President Jason Isaac told Fox News Digital. "Under the guise of ‘judicial education,’ CJP uses activist academics to give a pro-plaintiff sneak peek at climate change lawsuits. This kind of politicking underlines that the climate change lawsuits themselves are a left-wing attack on our quality of life.

"The Supreme Court will have an opportunity early next year to hear a case asking whether blue states and far-left mayors like Brandon Johnson can sue energy providers for climate change. Let us hope the court takes the case and ends Green New Deal lawfare."

Fox News Digital previously reported that since it was founded more than five years ago, the project has crafted 13 curriculum modules and hosted 42 events, and more than 1,700 judges have participated in its activities. And multiple judges serve as advisers at CJP, potentially having an impact on its curriculum and modules.

"So-called ‘climate change lawsuits,' lawsuits claiming that private companies should be monetarily liable for damage to public infrastructure allegedly caused by climate change, have exploded in the past five years," GOP Sen. Ted Cruz wrote in a letter to Environmental Law Institute earlier this year.

"In tandem with this unprecedented litigation, the Environmental Law Institute (ELI) launched a ‘first-of-its-kind effort’ to provide judges with ‘education on climate science, the impacts of climate change, and the ways climate science is arising in the law.’ It appears that ELI’s goal in providing this ‘education,’ however, may be to influence judges to side with plaintiffs in climate change cases."

The letter went on to label Carlson as "one of the program’s architects" and requested "information to allow the Committee to evaluate the efforts of both Ms. Carlson and ELI to influence the federal judiciary in its adjudication of climate litigation."

Cruz alleged that "ELI intends to accomplish via the courts what it cannot get enacted into law: a radical environmental agenda."

"To help judges reach those ‘appropriate’ decisions, the Project developed the ‘Climate Science and Law for Judges Curriculum’ (the Curriculum). While ELI claims the Project is ‘neutral' and ‘objective,’ the Curriculum reads like a playbook for judges to find in favor of plaintiffs in artificial climate change cases against traditional energy companies: it includes courses that ‘show how climate science is built on long-established scientific disciplines' and 'explore the human-caused component of [global] warming,’ such as the ‘causal connections between emissions’ and ‘changes in the climate.’"

An American Energy Institute report earlier this year alleges CJP "hides its partnership with the plaintiffs because they know these ties create judicial ethics problems."

AEI says Sandra Nichols Thiam, an ELI vice president and director of judicial education, acknowledged as much in a 2023 press statement, saying, "If we even appeared biased or if there was a whiff of bias, we wouldn’t be able to do what we’re doing."

"Taken together, it appears CJP made the thinnest possible disclosures to create the appearance of rectitude," AEI states. "But their admissions confirm that CJP exists to facilitate informal, ex parte contacts between judges and climate activists under the guise of judicial education. And secrecy remains essential to their operation, whose goal, as Thiam has said, is to develop ‘a body of law that supports climate action.'" 

AEI, a group self-described as "dedicated to promoting policies that ensure America’s energy security and economic prosperity," says CJP’s work is "an attack on the rule of law."

"In America, the powerful aren’t allowed to coax and manipulate judges before their cases are heard," the report states.

In a statement to Fox News Digital, an ELI spokesperson said, "CJP doesn’t participate in litigation, support or coordinate with any parties in litigation, or advise judges on how they should rule in any case. Our courses provide judges with access to evidence-based information about climate science and trends in the law.

"Of course, experts in the field are welcome to provide their expertise to CJP programs while separately and independently providing that same expertise in another setting that is unrelated to the CJP program. It is routine and encouraged for judges to participate in continuing education that exposes them to expertise in a wide variety of disciplines."

Fox News Digital’s Thomas Catenacci contributed to this report