Wrong. What Bush is doing differs from what Clinton and Carter did.It's not a matter of proof. Bush admits the facts. In fact, he brags about them. It's a matter of whether his administration's actions violate the law. Unlike you, I don't claim to know all the details of FISA, but the legal arguments I have heard in support of Bush's position are silly, while the arguments that he violated the law sound quite persuasive.

Here's a link to a Q&A with a right-leaning Constitutional expert explaining why Bush is violating the law: http://www.fed-soc.org/pdf/domesticsurveillance.pdf

Here's an admittedly left-wing website talking about the differences between what Clinton did and what Bush is doing: http://www.thinkprogress.org/index.php?s=clinton+fisa

Do you have any facts to support your claim that Clinton and Carter did the same thing Bush is doing?