That's what Politico says:
House Appropriations Committee Chairman Dave Obey (D-Wis.) and Rep. Maxine Waters (D-Calif.) engaged in a late-afternoon shouting match on the House floor after Obey reportedly rebuffed Waters on an earmark request, aides and witnesses said.
Witnesses, speaking on condition of anonymity, said it appeared that Waters pushed or shoved Obey. The pair were seen shouting at each other and had to be separated by members -- who were crowded on the floor casting final votes before heading off to a party at the White House.
"You're out of line," Waters shot while walking down toward the well.
"You're out of line," Obey shot back before turning and walking away.
But then Obey stopped, turned back toward Waters, and shouted: "I'm not going to approve that earmark!"
"Chairman Obey was angry, and shouted that he didn't care about my plea," Ms. Waters said. "This is a prime example of how the system often works against the well-being of the poorest and neediest people in our country."

there's something eeeewww about politicos that name 'monuments' after themselves. It's unseemly, pompous and just plain icky.