Border wall ‘a legitimate issue’

Donald Trump has dominated the Republican race with his calls for a crackdown on illegal immigrants and an impenetrable wall on the border between the U.S. and Mexico. His rivals have scrambled to match his base-pleasing tough talk.

On NBC’s Meet the Press recently, Wisconsin Gov. Scott Walker was asked to explain whether he would also build a wall between the U.S. and Canada. Walker’s response: “Some people have asked us about that in New Hampshire . . . So that is a legitimate issue for us to look at.”