Question for Candidates

Time was when the one thing all presidential candidates claimed for themselves was their loyalty to the U.S. Constitution. Anyone elected president even takes an oath to uphold it:

"I do solemnly swear (or affirm) that I will faithfully execute the office of President of the United States, and will to the best of my ability, preserve, protect and defend the Constitution of the United States."

Given the grave threat to the Constitution posed by the Bush administration's FISA proposal now pending in the U.S. Senate, Bryan at Why Now? rightly asks, "Where in hell are Obama and Clinton?"

For that matter, where are all the presidential candidates, whether they be in the Senate or not? Have they no motivation or "ability" to "preserve, protect and defend the Constitution?"