President Donald Trump says that the case that is about to be heard by the justices of the U.S. Supreme Court court is the "most important in history." 

Fox News reports that the case that Trump is referring to is the one challenging his use of tariffs.

The question before the high court is whether or not a president has the unilateral authority to use tariffs the way he has been using them.

Donald J. Trump Truth Social 11.02.25 06:54 PM EST

Next week’s Case on Tariffs is one of the most important in the History of the Country. If a President is not allowed to use Tariffs, we will be at a major disadvantage against all other Countries throughout the World,…

— Commentary Donald J. Trump Posts From Truth Social (@TrumpDailyPosts) November 3, 2025

"Most important in history"

Trump, over the weekend, took to social media to highlight the importance of the tariff case.

He began:

Next week’s Case on Tariffs is one of the most important in the History of the Country. If a President is not allowed to use Tariffs, we will be at a major disadvantage against all other Countries throughout the World, especially the “Majors.” In a true sense, we would be defenseless!

The president went on to explain how "tariffs have brought us Great Wealth and National Security in the nine months that I have had the Honor to serve as President."

He continued:

The Stock Market has hit All Time Highs many times during my short time in Office, with virtually No Inflation, and National Security that is second to none. Our recent successful negotiation with China, and many others, put us in a strong position only because we had Tariffs with which to negotiate fair and sustainable Deals. If a President was not able to quickly and nimbly use the power of Tariffs, we would be defenseless, leading perhaps even to the ruination of our Nation. The only people fighting us are Foreign Countries who for years have taken advantage of us, those who hate our Country and, the Democrats, because our numbers are insurmountably good.

Trump concluded by once again highlighting the significance of the case, writing, "If we win, we will be the Richest, Most Secure Country anywhere in the World, BY FAR. If we lose, our Country could be reduced to almost Third World status — Pray to God that that doesn’t happen!"

It's almost here

The Supreme Court is set to hear arguments in the tariff case this week.

The president, according to Fox Business, "had originally floated the idea of attending on Oct. 15."

This would have been unprecedented.

Trump, however, has now eliminated this possibility.

"I will not be going to the Court on Wednesday," Trump said.