republican presidential candidate scott walker says that building a wall along the country's norther border with canada is a legitimate issue that merits further review.









republican candidates have generally taken a get-tough approach on deterring illegal immigration, but they usually focus on the border with mexico.









the wisconsin governor was asked whether he wanted to build a wall on the northern border, too, during an interview sunday on nbc's "meet the press."









walker says law enforcement officials in new hampshire brought up the topic of building a wall along the u.s.-canadian border during a recent town hall meeting. he says they raised some legitimate concerns, so it's a "legitimate issue for us to look at."









the u.s.-canada boundary is the longest international border in the world at 5,525 miles long.
scott walker: wall on canadian border worth reviewing
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