You didn't say it was simply a matter of revising the law when Bush did it. You said it was unconstitutional. Now you're claiming that statutes can override the US constitution?

Clearly that isn't the case. The constitution is the supreme law of the law. It trumps both state and federal statutes.

If you thought wiretapping was unconstitutional under Bush, absent a constitutional Amendement, it would be unconstitutional under Obama.