CW, of course I don't work for any campaign. What I'm saying has validity. Scott Walker gained traction by coming out solidly against illegals being in the US. He's been challenged about that. The challenges can take hold, in light of his previous record on the issue which he has renounced.
The only way to push back is to condemn strongly the crime wave caused by illegals. To do that, he should support Trump in his making it a major issue.