Scott Walker entered the 2016 presidential race as a conservative who fights and wins. Assuming his announcement isn’t totally overshadowed by the Iran deal, the first thing he will have to fight is Donald Trump’s hijacking of the GOP nominating contest. Can he win?

The Wisconsin governor is well suited to put an end to the Trumpnado. He offers a blue-collar, can-do conservatism. He appeals to various wings of the party. And most importantly, he can take away immigration as Trump’s signature issue.