Krulwich Wonders... 'Don't Touch Me,' Said Canada. 'I Won't!' Said The U.S.A. So They Moved 20 Feet Apart April 25, 2014 Canada and the U.S.A. agreed to create a 20-foot-wide corridor between them that runs for 5,500 continuous miles. Cartographers drew the line straight, but engineers built it crooked. Take a look.