India, Jan. 13 -- WASHINGTON, D.C., January 13 - President Donald Trump declared the United States would be "screwed" if the Supreme Court rules he overstepped his authority in imposing sweeping tariffs, warning in a social media post that the government could be forced into a financially catastrophic effort to refund hundreds of billions of dollars. The public pressure campaign comes as the Court nears a decision that could redefine presidential trade powers.

In a Truth Social post on Monday, President Trump argued that repaying tariffs already collected would be a "complete mess" and "almost impossible for our Country to pay." He claimed direct refunds could reach "many Hundreds of Billions of Dollars," and when including broader econo...