President Donald Trump said in a new interview published Oct. 19 that the United States will struggle “for years” if the Supreme Court strikes down a broad range of tariffs he implemented earlier this year.

During an interview with Fox News’ Maria Bartiromo on “Sunday Morning Futures,” the president said that the revenue and pressure on other countries that tariffs create mean that it’s vital for is administration to win the case before the Supreme Court.

“If we don’t, we'll be struggling for years to come,” Trump warned on the program.

He said that several wars were stopped under his administration due to the leverage brought by his tariffs, including one earlier this year between Pakistan and India.

When asked about what he plans to do if the Supreme Court doesn’t rule in his favor, the president said that it’s a national security problem and that he would have to act.

“I'll have to figure something out. I don’t want to even think about it, we’re doing so well,” Trump said. “If they took away tariffs, then they’ve taken away our national security.”

Trump added that the tariff case is being brought by leftists who “don’t even know what they’re doing and people that represent foreign countries that have taken advantage of us for years.”

Many of the tariffs that Trump imposed, most of which came in early April, were implemented under the International Emergency Economic Powers Act. Weeks later, the Court of International Trade ruled that the administration cannot implement tariffs under the law, an order that was upheld over the summer by an appeals court that later prompted the Trump administration to appeal to the Supreme Court.

The U.S. high court is due to hear arguments in the case next month. Last week, Trump told reporters that he may attend the Supreme Court case’s oral arguments, making him the first president to attend arguments before the Supreme Court in person.

“We have a big case coming up in the Supreme Court, and I will tell you, that’s one of the most important cases in the history of our country,” Trump told reporters in the White House on Oct. 15.

In those remarks, Trump also warned that the case must be won, or the United States “will be a weakened, troubled, financial mess for many, many years to come.”

“That’s why I think I’m going to go to the Supreme Court to watch,” he said.

Trump recently signed a proclamation giving domestic automakers additional relief from tariffs on auto parts, extending until 2030 what was supposed to have been a short-term rebate. It also made official a 25 percent import tax on medium and heavy duty trucks, starting Nov. 1.

A week before that, Trump said he would place an additional 100 percent tax on Chinese imports starting Nov. 1, or sooner, after the president expressed frustration with new export restrictions China placed on rare earth elements, an essential component of electronics the communist regime holds a monopoly on in key parts of its production.

Trump had also suggested there may be time for the regime to come back to the table before the new tariffs kick in. “We’re going to have to see what happens. That’s why I made it Nov. 1,” he said in remarks earlier in October.

The Chinese regime’s restriction on rare earths involved requiring foreign companies to get special approval for shipping the minerals abroad. It also announced permitting requirements on exports of technologies used in the mining, smelting, and recycling of rare earths, adding that any export requests for products used in military components would be rejected.

In response, Trump said that the regime is “becoming very hostile” and that it’s using its monopoly to hold the world “captive.”

The Associated Press contributed to this report.