Attorney General Eric Holder has responded to Kentucky Sen. Rand Paul's question about whether the federal government can legally use a drone strike against an American citizen on U.S. soil if the person is "not engaged in combat":

Earlier this week, Holder wrote in a letter to Paul that the president has the authority to order militarized drone strikes on American citizens within the United States, but only in “an extraordinary circumstance.”

In protest, Paul spoke for 13 hours straight on the Senate floor Wednesday, arguing against the drone policy.