The Oregon context Oregon is leading other Democratic states in a lawsuit over tariffs. WASHINGTON — The U.S. Supreme Court will hear arguments in early November on whether President Donald Trump’s emergency tariffs are legal, according to an order the court released Tuesday. Recently the Supreme Court has handed the administration wins on immigration enforcement and withholding foreign aid. Tariffs are taxes that the U.S. government collects from domestic businesses and purchasers when they import foreign goods. Arizona, Colorado, Maine, Minnesota, Nevada, New Mexico and Oregon were among states that challenged Trump’s emergency tariffs.