washington, where there was a big brouhaha after tea party fire brand senator rand paul spoke more than 12 hours, nonstop, on the senate floor. It was a filibuster about america's policy on drones.... See More
washington, where there was a big brouhaha after tea party fire brand senator rand paul spoke more than 12 hours, nonstop, on the senate floor. It was a filibuster about america's policy on drones. And the reaction? Here's abc's chief white house correspondent jonathan karl. I will speak until I can no longer speak. Reporter: It was something we almost never see anymore -- an all-out talk-till-you-drop protest speech on the senate floor, with cameo references to jane fonda's anti-war activites. That's one thing if you want to try her for treason, but to just drop a drone, hellfire missile, on jane fonda? Reporter: And a senator talking for almost 13 hours straight without sitting down or even taking a bathroom break. His only sustenance, a candy bar and some peanuts. He spoke to block a vote on the president's nominee for cia director, saying he first wanted an answer to a simple question. Can the president use a drone strike to kill an unarmed american citizen on u.S. Soil? We'll take a telegram. We'll even take a tweet. Reporter: The president's power has so few limits, the administration refused to directly answer, earning the tea party senator some unlikely allies, even comedian jon stewart. He's using the filibuster the way it was meant to be used. Reporter: The talkathon stopping only when nature finally called. I've discovered that there are some limits to filibustering and I'm going to have to go take care of one of those in a few minutes here. Reporter: But it worked. John brennan was confirmed as cia director, but only after senator paul got his answer. No. The president cannot kill an unarmed u.S. Citizen here at home with a drone. Senator paul told us it was a victory. But not one likely to be repeated. See yourself doing this again? Not any time soon. Reporter: Jonathan karl, abc news, washington.
This transcript has been automatically generated and may not be 100% accurate.