But Neugebauer also acknowledged that the House chamber "is a place of decorum and respect. The timing and tone of my comment last night was inappropriate."
Neugebauer is one of the House's most conservative members, consistently speaking out about the need for lower taxes and smaller government. Last year he co-sponsored a resolution requiring that presidential candidates produce copies of their birth certificates. That followed "birther" movement allegations that Obama was born outside the United States and not qualified to be president.
In an interview Monday with Fox News, Stupak lamented the prevalence over the past year of "uncivilized behavior" when lawmakers are trying to speak on the House floor. "We can disagree on these issues as we should and we should have a meaningful debate but personal attacks have no place on it."
Later, talking to MSNBC, Stupak said he accepted Neugebauer's apology but questioned the Texas Republican's claim that it was not personal. "I certainly took it as a personal attack on me," Stupak said. If not, "maybe Randy needs to apologize to the House of Representatives."
The outburst was reminiscent of last September when another GOP conservative, Rep. Joe Wilson of South Carolina, yelled out "you lie" when Obama was addressing Congress on the health care issue. He also issued an apology.
Unlike that incident, Wilson was quickly identified by reporters covering the speech. This time, it was not immediately known who did the shouting and it was nearly a day before Neugebauer came forward.