Criticizing Bush's endless stream of blather on immigration is just about the lowest hanging fruit possible, but let's look at his latest stream of semi-consciousness [1]. First, he sounds like Howard Dean ("scapegoating immigrants") when he accuses his opponents of targeting illegal aliens. Then, he enters his peevish/defensive mode with the next four sentences. Then, he offers a non-sequitur for the last:

...It's easy to hold up somebody who is here and working hard as a political target. I would like to get this bill done for a lot of reasons. I'd like to get it done because it's the right thing to do. I'd like to get it done because I happen to believe the approach that is now being discussed in the Senate is an approach that will actually solve the problem. I'd like to get it out of politics. I don't think it's good to be, you know, holding people up. We've been through immigration debates in this country, and they can bring out the worst, sometimes, in people. We're a land of immigrants.

Is this "land of immigrants" a verbal tic or something? Why exactly would he add that on at the end?

Before that, he showed a) he's willing to mischaracterize the positions of his opponents, b) that like Michael Chertoff he's not willing to do his job, and b) how "reform" would fail miserably:

A tough issue, of course, is what do you do with the people already here? Anything short of kicking them out, as far as some people are concerned, is called amnesty. You can't kick them out. Anybody who advocates trying to dig out 12 million people who have been in our society for a while is sending a signal to the American people that's just not real....

He goes on to define amnesty in his own special way. As for the last sentence, the "reform" he supports has provisions designed to "dig out" people who come here as "guests". Those "guests" will be here "for a while", and it's trivially easy to imagine corrupt politicians like Bush or Kennedy saying the exact same thing about "guests".

[1] whitehouse.gov/news/releases/2007/05/20070524.html