Canada's retaliatory tariffs on $20 billion worth of U.S. goods took effect Tuesday, Sept. 8, adding new strain to an aerospace supply chain that runs through Everett.

Levies as high as 50% now apply to hundreds of U.S. products, the Everett Post reported. The tariffs target nearly 6% of annual U.S. exports to Canada, according to U.S. Census Bureau data.

The day before, President Donald Trump escalated the fight by threatening to ban sales of planes made by Bombardier, the Canadian aerospace company, unless it moves manufacturing to the United States. "If they want our Market, they must build here, and stop treating America like a 'piggybank,'" Trump wrote on Truth Social on Monday, Sept. 7, according to CNBC.

Bombardier employs more than 3,000 workers across several U.S. states, according to Britannica.

The company told ABC News in a statement that it contributes significantly to the American aerospace sector.

For Everett, the stakes are local.

The Port of Everett handles 100% of the oversized aerospace parts for Boeing's 767, 777, 777X and KC-46 Tanker programs.

The port supports more than 40,000 jobs and contributes $433 million in state and local taxes. More than 60% of jobs in Snohomish County are tied to trade, according to port data.

The port was already hurting before the latest round. Port of Everett CEO Lisa Lefeber said on July 27, during a tour of Pier 3 with Rep. Rick Larsen, that the port was experiencing one of its slowest shipping seasons in decades because of trade tariffs.

Cargo traffic had shifted to Gulf Coast ports. "We're basically being kept in business by Boeing and cement," Lefeber told the Lynnwood Times at the time.

The trade war intensified in late August after official negotiations collapsed. Daniel Tappana, director of economic development at Economic Alliance Snohomish County, warned then that the uncertainty was making it hard for businesses to plan costs and allocate resources. "Tariffs can be taken away at the posting of a tweet but trust takes years to build," Tappana told the Everett Post on Aug. 25.

The Economic Alliance is collecting reports from local businesses on workforce reductions or revenue losses tied to the tariffs. Businesses can call 425-743-4567.

Trump has also vowed to raise tariffs on Canadian-made cars and auto parts from 25% to 50% starting in January 2027. Canadian Prime Minister Mark Carney rebuked the administration, saying U.S. public messaging signaled an unwillingness to negotiate.

No date for resumed talks has been announced. In the first half of 2026, the U.S. exported $175.8 billion in goods to Canada, its second-largest export market after Mexico.