Attacked by two justices, lower-court judges and litigants, the 1964 ruling in New York Times v. Sullivan keeps getting cited approvingly in the Supreme Court’s decisions.

The Corporate Transparency Act, which requires businesses to disclose ownership information, was blocked by a federal judge as beyond Congress’s authority.

A unanimous Supreme Court on Friday upheld a law that effectively bans the wildly popular app TikTok in the United States starting on Sunday, Jan. 19. Adam Liptak, who covers the Supreme Court for The New York Times, explains how free speech and national security collided in this decision.

With the court signaling it will release a decision on Friday, lobbyists for the app pushed lawmakers to shift course.

The company argued that the law, citing potential Chinese threats to the nation’s security, violated its First Amendment rights and those of its 170 million users.

In trying to find the line between false statements and misleading ones in the case of a Chicago politician, members of the Supreme Court posed colorful questions.

Lower courts ruled that a task force that determines which treatments must be covered at no cost had not been validly appointed.

Two Republican appointees, Chief Justice Roberts and Justice Barrett, joined the court’s three liberals in ordering the president-elect to face sentencing on Friday.

The justices are expected to rule quickly in the case, which pits national security concerns about China against the First Amendment’s protection of free speech.

The court, which hears arguments on Friday in a challenge to a law banning the app, has issued varying rulings when those two interests clashed.

The briefs, filed a week before oral arguments, offered sharply differing accounts of China’s influence over the site and the role of the First Amendment.

The president-elect took no position on the app’s First Amendment challenge to the law, which sets a Jan. 19 deadline to sell or close the popular platform.

The Supreme Court will hear arguments next month in First Amendment challenges to laws banning the app and shielding minors from sexual materials on the internet.