How's he going to do that if they're deported and there's a wall? Let them back in so they can be given amnesty?
This is what Walker has been tackling and winning against in the hotbed and wellspring of socialism (the Wisconsin Idea that started over 100 years ago and spread across the country). He's taken on the machine that has built the political, educational, media army that is burying our Republic.
You'll look long and hard to find such an extensive catalog of a fight against these angry, entrenched Leftists, one that started in 2011 and is still being waged today.
Look over the information at those two links.