The trouble with being a senator - they keep track of what you say and do:
from Salon.com News | Resorting to semantics
[...] Senate Majority Leader Bill Frist will arrange early next week for the presiding officer of the Senate to declare that it's unconstitutional to filibuster judicial nominees. There's just one catch: On March 8, 2000, Frist himself tried to filibuster a judicial nominee.
Earlier this week on the Senate floor, New York Sen. Chuck Schumer asked Frist about his vote in favor of filibustering Richard Paez, a judge Bill Clinton appointed to the U.S. Court of Appeals for the Ninth Circuit. Frist stammered through the beginnings of an explanation -- "Mr. President, the, in response, the Paez nomination ..." -- and then said he'd return to the Senate floor later to explain his filibuster vote further.