Black tape marks the U.S.-Canada border inside the Haskell Free Library and Opera House, with Stanstead, Quebec, to the right, and Derby Line, Vermont, on the left, in this photo from Feb. 28, 2017.

By Oct. 1, all Canadians will be required to use the entrance to the Haskell Free Library and Opera House on Canada's side of the border, the U.S. government said.

A family from the U.S. enters the Haskell Free Library and Opera House in Derby Line, Vermont, on Friday, March 21, 2025. [Photo: Christinne Muschi/The Canadian Press via AP] ...

For more than 100 years, people in Stanstead, Quebec, have been able to walk into Derby Line, Vermont, to enter the border-straddling Haskell Free Library and Opera House – no passport required.

For more than 100 years, people in Stanstead, Quebec, have been able to walk into Derby Line, Vermont, to enter the border-straddling Haskell Free Library and Opera House – no passport required.

For more than 100 years, people in Stanstead, Quebec, have been able to walk into Derby Line, Vermont, to enter the border-straddling Haskell Free Library and Opera House – no passport required.

For more than 100 years, people in Stanstead, Quebec, have been able to walk into Derby Line, Vermont, to enter the border-straddling Haskell Free Library and Opera House – no passport required.