They totally do a lot of pick-and-choose on what gets censored and what doesn't - and what's allowed in one song and what's not allowed in another - even if it's the same context and same station. A song I heard recently took out a sentence that has the word "suicidal" or "suicide" in it -

You're way too beautiful girl
That's why it'll never work
You'll have me suicidal, suicidal
When you say it's over
Damn all these beautiful girls
They only wanna do your dirt
They'll have you suicidal, suicidal
When they say it's over

Mmmm.... and yeah, I think it's WTF that they censor the Bush thing - because, really... uh... >.> :X