The exemption was granted at the request of Ford, General Motors and Stellantis.

The stock market surged on Wednesday after the Trump administration granted automakers a one-month exemption from tariffs imposed a day earlier.

The Dow Jones Industrial Average closed the trading session up nearly 500 points, or 1.1%, while the S&P 500 also jumped 1.1%. The tech-heavy Nasdaq increased nearly 1.5% on Wednesday.

Press secretary Karoline Leavitt said President Donald Trump had ordered the delay of auto tariffs after a request from the Big 3 U.S. automakers: Ford, General Motors and Stellantis, the parent company of Jeep and Chrysler.

“The president is giving them an exemption for one month so they’re not at an economic disadvantage,” Leavitt said during a press conference at the White House.

The automakers’ shares soared after the announcement. Ford’s stock price ended the trading day up nearly 6%, while General Motors climbed more than 7%. Stellantis surged more than 9% on Wednesday.

The tariffs are expected to pose a challenge for U.S. automakers, many of which depend on a supply chain closely intertwined with Mexico and Canada.

The American Automotive Policy Council, or AAPC, a trade group that represents the Big 3 U.S. automakers, praised the one-month tariff exemption.

“American Automakers Ford, GM and Stellantis applaud President Trump for recognizing that vehicles and parts that meet the high US and regional USMCA content requirements should be exempt from these tariffs,” AAPC President Matt Blunt told ABC News in a statement.

“We look forward to working with President Trump and his administration on our shared goals of increasing US automotive production and expanding exports to markets all around the world,” Blunt added.

While easing some tariffs, Trump criticized Canada on Wednesday for what he described as failure to take the steps necessary for the United States to withdraw all of the tariffs imposed a day earlier.

Trump said he held a call with Canadian Prime Minister Justin Trudeau on Wednesday during which the two leaders discussed a path to U.S. withdrawal of the tariffs. Such an outcome would require sufficient action by Canada to address drug trafficking, Trump recounted relaying to Trudeau.

A week ago, Trump alleged that illicit drugs such as fentanyl had continued to enter the U.S. through Mexico and Canada despite agreements reached last month to address the issue.

In a post on Truth Social on Wednesday, Trump said “nothing has convinced me” that the flow of fentanyl into the U.S. had stopped.

“[Trudeau] said that it’s gotten better, but I said, ‘That’s not good enough.’ The call ended in a ‘somewhat’ friendly manner!” Trump said.

Since September, nearly all fentanyl seized by the U.S. came through the Southern border with Mexico, according to the U.S. Customs and Border Patrol, or CBP, a federal agency. Less than 1% of fentanyl was seized at the Northern border with Canada, CBP found.

Canadian Prime Minister Justin Trudeau sharply criticized the tariffs on Tuesday, calling them a “dumb” policy that does not “make sense.”

The reason for the tariffs is based on a false allegation about Canada as a major source of drugs entering the U.S., Trudeau added.

Persistent tensions between the U.S. and Canada emerged after China issued a warning on Tuesday night that it stands ready for any “type of war” with the United States in the aftermath of tariffs imposed by the Trump administration.

The U.S. slapped 25% tariffs on goods from Mexico and Canada, as well as 10% tariffs on imports from China. The fresh round of duties on Chinese goods doubled an initial set of tariffs placed on China last month.

A spokesperson for the Chinese foreign ministry said the tariffs would not lead to a resolution of U.S. concerns about fentanyl originating in China.

“If the U.S. truly wants to solve the fentanyl issue, then the right thing to do is to consult with China on the basis of equality, mutual respect and mutual benefit to address each other’s concerns,” Chinese spokesperson Lin Jian said at a press conference late Tuesday.

“If the U.S. has other agenda in mind and if war is what the U.S. wants, be it a tariff war, a trade war or any other type of war, we’re ready to fight till the end,” the spokesperson added.

The comments came soon after the Trump administration imposed 25% tariffs on goods from Mexico and Canada, as well as 10% tariffs on imports from China. The fresh round of duties on Chinese goods doubled an initial set of tariffs placed on China last month.

Within minutes of the new U.S. tariffs taking effect, China unveiled on Tuesday its initial response by placing additional 10% to 15% tariffs on imported U.S. goods, like chicken, wheat, soybeans and beef.

“The retaliatory tariffs that China is imposing is very specific and directly targeted at American farmers, who are mostly in red states and mostly voted for Trump,” Neil Thomas, a fellow for Chinese politics at the Asia Society Policy Institute’s Center for China Analysis, told ABC News.

“So China is trying to create pain where it matters for Trump, and it’s hoping to get Trump to the negotiating table and offer relief for this group of Trump supporters,” Thomas added.

The recent duties will be placed on top of similar tariffs imposed by China during the first Trump administration’s trade war in 2018. Some of those tariffs are already at 25%, though Beijing issued some waivers as a result of the 2020 “phase one” trade deal.

The new Chinese tariffs are set to come into effect for goods shipped out March 10.

In a series of social media posts last month, Trump said he would place tariffs on Canada, Mexico and China for hosting the manufacture and transport of illicit drugs that end up in the U.S.

During an address to a joint session of Congress on Tuesday night, Trump also sharply criticized tariffs imposed by the Chinese government on U.S. goods.

“President Trump continues to demonstrate his commitment to ensuring U.S. trade policy serves the national interest,” the White House said in a statement on Tuesday.

Commerce Secretary Howard Lutnick said on Tuesday afternoon that Trump may soon offer Canada and Mexico a pathway to relief from tariffs placed on some goods covered by North America’s free trade agreement.

Lutnick did not mention a potential compromise with China.