Senator Landrieu: South Dakota Borders Canada Breitbart News: While attempting to attack an amendment to the “Gang of Eight” immigration bill that would require a fence be built along Mexico’s border with the U.S. before legalization, Sen. Mary Landrieu (D-LA) made a significant geographical gaffe. Landrieu, who represents Louisiana in the U.S. Senate, was trying to undermine the amendment Sen. John Thune (R-SD) offered. In doing so, she tried to argue Sen. John McCain (R-AZ) was more qualified to talk about border issues than Thune because McCain represents Arizona. “A smart fence, which is what Senator McCain and I want to build--since he’s from Arizona, I think he knows more about this than the Senator from South Dakota who only has a border with Canada and that is quite different,” Landrieu said. South Dakota does not share a border with Canada. It does, however, share borders with North Dakota, Wyoming, Montana, Minnesota, Nebraska and Iowa.