Scott Walker calls border wall with Canada a 'legitimate issue'
Republican presidential hopeful Scott Walker has called building a wall along the border between the US and Canada a "legitimate issue".
Illegal immigration and the security of the southern border with Mexico have been major issues in the Republican race for president, but the northern border has not been discussed.
Mr Walker made the comments in response to a question from a NBC News reporter.
"That is a legitimate issue for us to look at," he said on Sunday.
At 5,525 miles (8,891km), the US border with Canada is the longest in the world. The border is often referred to as the world's "longest undefended border" although security has tightened since the 11 September 2001 attacks.
Rival presidential contender and Republican frontrunner Donald Trump has called for Mexico to pay to build a border wall with the US.
http://www.bbc.com/news/world-us-canada-34107896
God, I love this state.