FILE - In this June 25, 2008, file photo, a floating marker indicates the border between the U.S. and Canada on Lake Champlain, in Vermont. A new report from the U.S. Government Accountability Office says the Border Patrol, and the separate organization that provides surveillance from the air and along the waterways on the U.S. border with Canada, must do more to measure their effectiveness at securing the northern border between ports of entry. (AP Photo/Toby Talbot, File)
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