If a US government action is taking place that involves a US citizen, or MAY involve a US citizen, a warrant should be mandatory. PERIOD.
If we bend on this, why not bend on the right to a speedy trial, or due process? Heck, let's just do away with the standards of the Constitution all together and just jail anyone that whomever is in power deems a threat.
Mike
POWs deserve a speedy trial?
Respectfully, you confuse civil acts with acts of war.
Again: when a person in Germany, who is not a citizen of the U.S. calls people, which U.S. judge has the authority to grant a warrant to wiretap? None. This is foreign policy. That he happens to call someone in the U.S. from time to time, should not make him immune to military surveillance.