CHRIS MATTHEWS: Here's Senator Rand Paul on CNBC earlier today, earlier this evening:



SEN. RAND PAUL: I've heard of many tragic cases of walking, talking, normal children who wound up with profound mental disorders after vaccines. I'm not arguing vaccines are a bad idea. I think they're a good thing, but I think the parents should have some input. The state doesn't own your children. Parents own the children. And it is an issue of freedom.



MATTHEWS: Dr. Dean, Governor Dean, that seems like a pretty loosey-goosey case of causality here. If you heard what he said there, they ended up having problems after they were vaccinated. Well, people have problems after they, you know, do everything. Go to New Jersey for the weekend. I don't know but everything happens after something else happens. This causality argument I think is pretty weakly explained there. He didn't explain how vaccination leads to autism or anything else.



HOWARD DEAN: Well, first of all, it doesn't lead to autism, and that was grossly discredited. I mean, that never should have been put out in the press 15, 20 years ago when it happened. Second of all, I actually believe this disqualifies Rand Paul from becoming president of the United States. If you're a physician and you say what he just said, then you are clearly willing to override any set of facts that you ought to know. It's one thing for Christie to blunder his way through this and try to pander. For Rand Paul to deny his entire education as a physician -- I assume he went to a good medical school and knows something about medicine -- that is truly appalling. And he -- a guy like that should never be let near the White House.