Jeb Bush, appearing on Morning Joe, slightly walked back his opposition to a pathway to citizenship for illegal immigrants.

“If you can craft that in law, where you can have a path to citizenship where there isn’t an incentive for people to come illegally, I’m for it," he said. "I don’t have a problem with it. I don’t see you how you do it, but I’m not smart enough to figure out every aspect of a really complex law.”

Bush isn't against citizenship. But in his new book, Immigration Wars, he and co-author Clint Bolick argue that the rule of law must be respected. People who arrived illegally as adults should be able to get legal status, they say, but if they want to become citizens they should return to their country and apply through a more open process under comprehensive reform.