If you ever need a clearer understanding of FISA, warrentless wiretapping, and how poorly the mainstream media understands it, go read the professional blog of Gleen Greenwald on Salon.com:

The only reason why Congress began considering amendments to FISA in the first place was because a FISA court earlier this year ruled that a warrant was required for foreign-to-foreign calls incidentally routed through the U.S. via fiber optics. Everyone — from Russ Feingold to the ACLU — agreed that FISA never intended to require warrants for foreign-to-foreign calls that have nothing to do with U.S. citizens, and thus, none of the bills being considered — including the bill passed by the House — requires warrants for such foreign-to-foreign calls.