The U.S. government is ending a more than century-old friendly arrangement on the Canadian border as the two countries feud.

The town of Stanstead, Quebec, says U.S. authorities have unilaterally decided to “close the main Canadian access” to the ...

The entrance to the imposing Victorian-style brick and stone building is on the U.S. side, but an informal agreement between the two countries has always allowed Canadians to enter without a passport.