According to my research, FISA has had 19,000 warrant requests brought to them since 1979. Of those, 4 were rejected and they were subsequently granted when reworked. Fishtoplease is correct, the government could execute a wiretap and then have 72 hours in which to get the warrant authorizing the wiretap. The real question is "Why did George W. Bush need this other power?
What is he trying to hide?"