Telling her not to use her blog to pray for the president to choke on a pretzel would be an equally clear violation of the First Amendment, but you don't seem to find that unbelievable. *shrug*

I don't think it's particularly hard to believe that the Secret Service would try to intimidate a college student into shutting up--clear violation of the First Amendment or not--and I trust the blogger in question more than I trust the Bush government. This was years ago, however, so it's entirely possible what I'm remembering and what actually happened don't entirely match up.