What happened to Scott Walker?

National PostWhat happened to Scott Walker?Washington PostWisconsin Gov. Scott Walker surged into the top tier of the Republican presidential race with a fiery speech in the depths of winter in Iowa. But his candidacy has wilted in the heat of a summer dominated by Donald Trump, with loyalists and supporters ...Candidate Scott Walker open to a border wall -- with CanadaNew York Daily NewsBuild a US-Canada border wall? Scott Walker isn't ruling it outCBS NewsVoters have 'legitimate concerns' about Canadian border, Walker saysBoston GlobeBay News 9 -CBC.caall 175 news articles »