Scott Walker in Fox News Sunday interviews during 2015

On Education: Tuition cap on University of Wisconsin; then reform tenure

WALKER: What I'm doing with the University of Wisconsin system, is I'm giving them the same sorts of tools I gave to public education four years ago: the same critics said that was going to devastate public education. I took away seniority in tenure and now, we can hire and fire based on merit. We can pay based on performance. We can put the best and the brightest in our classrooms

Q: But U.W. says they're going to have to raise tuition on students.

WALKER: But they're not. We have a two-year tuition freeze.

Q: But after that?

WALKER: Going forward, we have a cap on it tied to inflation. And so, we will be much more affordable than just about any other campus in America. We believe it's not about austerity, it's about reform. The reforms that worked before will work here.

On Immigration: 2013: Comprehensive reform; 2015: no, that's amnesty

WALKER: No, I'm not talking about amnesty.

Q: But you said you supported it.

WALKER: And my view has changed. I'm flat out saying it. Candidates can say that. Sometimes they don't.

Q: So, you've changed from 2013?

WALKER: Absolutely. I look at the problems we've experienced for the last few years. I've talked to governors on the border and others out there. I've talked to people all across America. And the concerns I have is that we need to secure the border. We ultimately need to put in place a system that works. A legal immigration system that works. And part of doing this is put the onus on employers, getting them E-Verify and tools to do that. But I don't think you do it through amnesty.

On Principles & Values: Run for governor & president are determined by God's will

WALKER: Abraham Lincoln I think had it right. He said, "God doesn't pick winners in politics. He just calls us to be on his side." And in this case, I think there are people of faith who can have a variety of political views out there. But for us personally, you know, we make important decisions like we did years ago to run for governor. And a lot of it was about Tonette and I and our sons praying about it and asking if it was God's will for us to run. When I got married, when we had children, we made other important decisions. And the same thing would be true in making a decision here. We're trying to discern whether or not it's God's will for us to run and then ultimately figure out the next step in terms of who's winning, that's going to be up to the voters.

On War & Peace: Islamic terrorism like a virus; make sure it doesn't spread

WALKER: I believe we should not take any action off the table. I don't want to run into the war. But I don't want any of [our soldiers] to have died in vain. I think when we look at that and say there's radical Islamic terrorism, it's like a virus, we needed to be prepared to do what it takes to make sure it doesn't spread.

Q: You say you wouldn't take anything off the table, but that doesn't quite answer my question. Would you commit US ground forces?

WALKER: For me to do something like that would require a number of things. Listening to the chain of command, particularly the Joint Chiefs, your national security advisers and others, as to what's necessary and listening to the people who are actually out in the field is the best way to do that. But then also bring together a coalition. Certainly, reaffirming our major asset, our major ally in the region, that being Israel, but also our other allies around the world.