Some oil refineries will probably struggle to replace imported crude oil if President Trump imposes 25 percent tariffs on products from Canada and Mexico.

The industry is pumping ever more oil and natural gas, but it is doing so with only about three-quarters as many workers as it employed a decade ago.

The high court declined to hear a challenge to a major case in which Honolulu is suing energy companies over climate change.

The lawsuit, an unusual strategy for the oil giant, comes after California’s attorney general sued Exxon last year alleging it misled the public about plastics recycling.