The Canadian government didn’t immediately offer any direct comment after the American State Department confirmed that dual citizens of the affected countries would not be allowed to enter the U.S. over the next several months.

But Prime Minister Justin Trudeau tweeted Saturday, “To those fleeing persecution, terror (and) war, Canadians will welcome you, regardless of your faith.”

He followed it up by tweeting a photo of himself greeting a young Syrian refugee.

U.S. President Donald Trump’s executive order, which prevents citizens of Iran, Iraq, Sudan, Somalia, Syria, Yemen and Libya from entering the U.S. in the next three months, also banned refugees from Syria indefinitely, pending a review of the application process.

Bijan Ahmadi, president of the Iranian Canadian Congress, said he’s outraged by the new policy.

“It’s unacceptable. It’s very unreasonable,” he said. “It’s very discriminatory to target people based on their race, their religion, the country of their origin and the country of their birth. And the community has that same outrage.”

A representative from the Canada Border Services Agency deferred questions to U.S. Customs and Border Protection, which did not immediately respond.

Representatives from Global Affairs, Citizenship and Immigration also did not immediately respond to requests for comment.

A U.S. law enforcement official told The Associated Press there was an exemption for foreigners whose entry is in the U.S. national interest, but it was not immediately clear how that exemption might be applied.

WestJet and Air Canada say they were waiving cancellation fees for people who hold passports from the affected countries, though a representative from Air Canada declined to say how the company is dealing with dual citizens.

Air Canada said it expected that only a small handful of its passengers would be affected.