Telephone tapping should be legalized as this is a great way to find threats of many kinds and will also act as a safety measure for all of society. In order to have the best level of protection we must sometimes give up a small amount of freedom. The only people that should worry about this are people that are doing wrong.
I'll be in favor of telephone tapping when there is sufficient evidence to show its effectiveness. As it stands right now, I can't think of a single documented case where tapping has been integral in stopping some supposed act of terrorism. As it is, untold resources are being wasted on tapping the phones of law-abiding citizens. These resources could be better spent in improving the lives of all Americans, not spying on them indiscriminately.