Ummm.
1) What U.S. judge has the authority to grant a warrant for actions in Germany?
2) So you are totally against collecting foreign intelligence?
3) What other methods of making war require a judicial confirmation in your opinion?
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