New Delhi, March 24 -- long-standing tradition that allowed Canadians and Americans to freely access the Haskell Free Library and Opera House through its main entrance on the Vermont side will end on Monday, CBS News reported.

For over a century, Canadian visitors could walk roughly 70 feet on the US sidewalk with identification and enter the library's front door in Derby Line, Vermont. However, the US government has now mandated that most Canadians must use a separate entrance on the Canadian side, citing security concerns.

Starting Monday, only Canadians with proof of library membership will be allowed to enter through the Vermont-side entrance. Nonmembers will need to use the Canadian-side entrance. By October 1, all Canadian visitor...