Washington, Ottawa end loophole that allowed border crossing

"STOP. DO NOT CROSS," read a sign posted at the most famous — and most used — unofficial border crossing into Canada, the two-lane Roxham Road.

In English and French, the sign warned asylum-seekers that if they went into Canada, they will be sent back to the United States.

The sign on the country road was posted on Saturday. It came after Canadian Prime Minister Justin Trudeau and US President Joe Biden announced on Friday an amendment to a pact two decades old that had permitted migrants to walk into Canada at unofficial crossing points and file an asylum claim.