Donald Trump’s rise in the polls following his unapologetic advancement of a hard-line stance on immigration seems to have inspired some of the other 2016 Republican presidential candidates to follow suit.

On Sunday’s episode of NBC’s Meet the Press, Wisconsin Governor and 2016 Republican presidential hopeful Scott Walker told anchor Chuck Todd that he is looking at whether the U.S. should build a wall across the northern border to Canada in an effort to prevent terrorists from crossing over and attacking targets within the United States.

Why are we always talking about the southern border and building a fence there?” asked Todd. “We don’t talk about a northern border, where if this is about securing the border from potential terrorists coming over, do you want to build a wall north of the border too?

Governor Walker replied, “Some people have asked us about that in New Hampshire. They raised some very legitimate concerns, including some law enforcement folks that brought that up to me at one of our town hall meetings about a week and a half ago. So that’s a legitimate issue for us to look at.

Walker listed his plan to secure the U.S. border and enforce current immigration laws above Trump’s proposal to end birthright citizenship in the U.S. in priority and said, “Whether it’s talking about the 14th Amendment or anything else, until we secure the border and enforce the laws, we shouldn’t be talking about any other issue out there.

He also clarified that he is “not talking about changing the Constitution” with regards to the subject of birthright citizenship and referred to the entire discussion as a distraction.

During the Meet the Press appearance, Walker also suggested that President Barack Obama’s decision to withdraw U.S. troops from Iraq according to the timeline established by George W. Bush’s U.S.-Iraq Status of Forces Agreement “opened the door, and the vacuum has been filled by ISIS.

Ben Swann recently explored Donald Trump’s claims on birthright citizenship in a CBS46 Atlanta Reality Check video. Watch it in the below-embedded video player for context in the debate over immigration reform.

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