President Donald Trump told reporters that a 250% tariff on dairy products imported into Canada makes it impossible to sell U.S. dairy there, and that "a tremendously high tariff" on lumber in Canada also makes it impossible to export that product to Canada. He called U.S. exports to Canada in those two categories "almost nonexistent." He said he is going to set U.S. tariffs at the same levels.

The implementation of -- and seemingly abrupt reprieve from -- 10% to 25% duties on goods imported from Canada and Mexico is causing whiplash among customs brokers.

Given that more than half of imports from Canada and Mexico don't claim USMCA preferences, trade lawyers and customs experts are expecting a sharp and rapid increase in entries that claim the preference.

President Donald Trump is excluding Canadian and Mexican exports from 10% or 25% duties that began March 4, as long as those goods can qualify for USMCA benefits. The change starts at 12:01 a.m. March 7.

CBP plans to double down on implementing President Donald Trump's America First trade policy, according to federal officials speaking during the quarterly meeting of the Commercial Customs Operations Advisory Committee, held in Atlanta on March 5.

Rep. Linda Sanchez of California, the top Democrat on the House Ways and Means Trade Subcommittee, criticized President Donald Trump's executive actions, predecessor Joe Biden's rulemaking and a past bill that moved through Ways and Means that aimed to curtail de minimis in various ways. She called them all "half-measures or simply playing Whac-A-Mole with specific countries."

Vehicles that meet the USMCA rules of origin will be able to enter the U.S. duty-free again, for one month, two White House spokespeople said March 5.

Commerce Secretary Howard Lutnick, when asked by a Bloomberg TV reporter if tariffs will be hiked on April 2, or if a process begins then, said "some tariffs will come on right away," while others could take three weeks, four weeks, or two months, depending on which law is being used.

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From corporate giants to small companies, in farming, manufacturing and retail, Americans said tariffs on Canada and Mexico were damaging their businesses and driving up costs for customers.