I don't give a rat's patootie if they tap the phones of suspected terrorists overseas calling into the US. Heck, I want them to do this. In a war, you spy on the enemy. When that enemy interacts with US citizens, those interactions will be spied upon.
I don't intend to interact with international terrorists, so I don't expect to be eavesdropped on. If for some reason, one of my Danish friends is thought to be a terrorist, I guess the government is going to find out that I despise Gamel Dansk, but enjoy Carlsberg. meh.