I went to every article you cited. Even the left leaning ones, Milwaukee Journal Sentinel, Politico, and (my God!) the Washington Post, admit that he never claimed he was for Illegal immigration. The border must be secured. You do not know very much about Scott Walker. I have followed him since he became the executive of Milwaukee County. He believes and says what he means. If he says he would close the border first, that is what he will do. You can doubt him if you want, but I would check with the teachers union in Wisconsin first. Ask them for some more talking points if you want.
In those links I posted he clearly states that he’s for citizenship for current illegals and then making it so everyone who wants can come here legally—removing the need for anyone to enter illegally in the future.
How hard is that to understand?