
WASHINGTON (CNN) - The GOP congressman from South Carolina who shouted out during President Obama's health care address to Congress insisted Thursday that his outburst was "spontaneous."
[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/POLITICS/09/10/obama.heckled.speech/art.joe.wilson.heckling.gi.jpg caption="Rep. Joe Wilson shouts, "You lie!" after President Obama denies the health plan would cover illegal immigrants."]
Rep. Joe Wilson shocked many observers Wednesday night when he shouted, "You lie!" after the president denied that health care legislation would provide free coverage for illegal immigrants.
Some people using Twitter suggested that Wilson's retort was planned and pointed to a comment the lawmaker posted on Labor Day:
"Happy Labor Day! Wonderful parade at Chapin, many people called out to oppose Obamacare which I assured them would be relayed tomorrow to DC," the tweet from Wilson's account said.
However, on the way to his office Thursday morning, Wilson said his outburst wasn't planned.
"It was spontaneous. It was when he stated, as he did, about not covering illegal aliens, when I knew we had those two amendments, and I say that respectfully," Wilson said.
He was referring to two amendments on one version of proposed health care legislation, which he said would have provided for verification of citizenship. Both of the amendments were defeated, he said.

Here are the big stories on the agenda today:
The dream ended last night for 17-year-old tennis star Melanie Oudin, who lost in straight sets to Caroline Wozniacki at the U.S. Open. Oudin joined John Roberts and Carol Costello on CNN’s “American Morning” Thursday to talk about her incredible run. An edited transcript of the interview is below.
John Roberts: Last year was your first U.S. Open appearance. You came in as a wild card. You were out in the first round. What was this year's experience compared to last?
Melanie Oudin: It was so much better. I wanted to get revenge this year, because it was very disappointing losing last year first round.
Roberts: Yeah, you'd been pro for all of four months…what the heck?
Oudin: Yeah. I did much better. And I’m really proud of myself for how I did.
Carol Costello: You were saying before it was a combination of everything that maybe affected your game. Tell us about that, what the pressure has been like on you, with all of the attention that you're getting.
Oudin: It's been hard. It's definitely different than what I'm used to. I'm just used to going out and playing tennis, but these two weeks have been so much more than that. It’s been lots of media and lots of different things happening and people knowing who I am now and just a lot of things, but all in all, it was good for me and it’s a good learning experience.
President Obama laid out his plan for health care reform in a prime-time speech to Congress last night. How's it playing with rank-and-file Americans? Our Jim Acosta watched the speech with a group of Virginia residents who put the president to the "dial test."
Tomorrow is September 11 – an important time to ask tough questions like this one: Could terrorists get their hands on a weapon that could do even more damage and smuggle it into the US?
CNN's Paula Newton reports in part two of our special series, "Spies Among Us."

