The Supreme Court justices to watch during the tariffs oral argument

President Donald Trump has been on a Supreme Court winning streak. Yet the cases he’s won so far have been minor next to the challenge to his worldwide tariffs that the justices will hear on Wednesday.

In Learning Resources v. Trump, the administration says that the International Emergency Economic Powers Act of 1977 (IEEPA) authorizes the president to unilaterally set import tax rates on any country at any level he wants. Five votes on the Supreme Court could ratify that reading of the law for the first time, dramatically expanding presidential power. Or five votes could render Trump’s signature economic policy unlawful.