The U.S. is imposing additional 50% tariffs on a range of Canadian goods in response to alleged trade discrimination against multiple U.S. products and industries, senior Trump administration officials said Monday.

President Donald Trump signed three proclamations Monday targeting different sets of Canadian imports with the steep tariffs in response to separate areas — motor vehicles, alcohol and dairy — where the U.S. says it has been treated unfairly, the officials said in a call with reporters.

The tariffs, which fall under the rarely used Section 338 of the Tariff Act of 1930, are set to take effect 30 days after the signings, according to the officials.

Each proclamation slaps tariffs on different Canadian products, “ranging from wine to hockey sticks to cement,” an official on the call said.

The new tariffs “apply to all covered goods,” regardless of whether they are otherwise covered under the existing free trade agreement between the U.S. and Canada, the official said.

“Canada has to be held accountable for this continued discrimination,” the official said.

Ontario Premier Doug Ford said on X later Monday afternoon that Canada “should respond tariff for tariff, dollar for dollar” if the new U.S. import duties proceed.

The Canadian Embassy in Washington, did not immediately respond to CNBC’s request for comment on the new U.S. trade actions.

Canada’s status as the U.S.’s long-time close ally and trade partner has frayed amid Trump’s tariff-heavy agenda and vocal displeasure with the nations’ trilateral trade pact with Mexico, among other sources of tension.

The U.S. and Canada engaged in escalating trade fight last year, as Trump slapped heavy tariffs on Canadian goods and Ottawa retaliated.

Earlier this month, the Trump administration said it would not renew that trade agreement, known as USMCA, opting instead to cast a shadow over the treaty’s future by triggering a series of annual reviews.

And last week, Trump tore into Canada over the wildfires blazing through northwestern Ontario, which have led to major air-pollution issues in large swaths of the U.S.

Claiming the issue has harmed the U.S. to the tune of billions of dollars, Trump wrote on Truth Social that those costs “must of necessity be added to the TARIFFS Canada is currently paying.”

One of the senior officials on Monday specified that the newly announced 50% tariffs on Canadian goods are not related to the wildfires — but added that Trump “has asked for options on that.”

Section 338 gives the president the power to impose tariffs of up to 50% on the goods of countries found to be discriminating against the U.S.

The obscure tariff-setting authority has “gone unused for decades,” John Veroneau and Catherine Gibson of law firm Covington and Burling…

A coalition of current and former Meta employees have sued the social media giant, alleging that the company used artificial intelligence in its latest round of layoffs in a way that was discriminatory.

In a lawsuit filed Monday, plaintiffs allege that Meta violated various protected-leave laws and discrimination acts related to pregnancies and disabilities, among others, and said they wish to pursue their claims individually in arbitration.

Attorneys representing the 26 unnamed workers said in a legal complaint filed in the United States Northern District Court of California that the plaintiffs were among the 10% of Meta’s workforce cut in the company’s May layoff round.

The plaintiffs allege that Meta’s “constellation of internal artificial-intelligence systems” failed to take approved absences into account when determining which employees to cut.

“Those tools draw on inputs—performance ratings, calibration scores, productivity and output metrics, ‘AI-native’ ratings, and AI-token consumption—that, by design, cannot be accumulated by an employee who is on protected medical or family leave, or whose output is reduced by a disability,” the lawyers wrote in the filing.

The lawsuit accuses Meta of using metrics such as token consumption, which has become a proxy for general AI usage, in a way that targeted certain employees.

Courthouse News Service previously reported the lawsuit.

A Meta spokesperson told CNBC in an email that the “claims lack merit and are not based on facts.”

“Workforce management and organizational decisions were and are made by people, not AI,” the Meta spokesperson said in the statement.

The lawsuit underscores the rising anxiety about AI’s impact on jobs and people with disabilities in the workforce.

The plaintiffs are asking the court to issue a “preliminary injunction maintaining the status quo of their employment” at Meta, “pending an independent audit of the algorithmically assisted selection process and resolution of the merits of their claims in arbitration.”

The lawsuit comes nearly a month after a federal judge in California ruled against tech firm Workday in a separate employee-related lawsuit involving the use of AI for hiring decisions. In that case, the judge ruled that Workday must face claims about the company’s use of AI-powered job screening services that allegedly violated state and federal laws pertaining to employee discrimination.

Workday denied the allegations and said in a statement at the time that the AI recruiting software doesn’t conduct hiring decisions “in California or anywhere else.”

“Our technology looks only at job qualifications, not protected traits like race, age, ​or disability,” Workday said in the statement. “We rigorously ​test our products as part ⁠of our Responsible AI program to confirm…