Migrants board an RCMP bus to go to the St-Bernard-de-Lacolle border crossing in Roxham, Que., in March, 2023. The Safe Third Country Agreement was expanded in 2023 to cover all of the land border between Canada and the U.S.

Lawyers and refugee experts say U.S. President Donald Trump ’s announcement that his country will halt all asylum claims should prompt the Canadian government to suspend the Safe Third Country Agreement, which they say is now unworkable.

The agreement mandates that asylum seekers must make a claim in the first country they arrive in, which allows Canada to turn away potential refugee claimants who enter the country from the United States as it is considered safe there.

Mr. Trump said last week that his administration would suspend asylum claims after the shooti

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