U.S. Rep. Bob Brady had a conversation with Sen. Barack Obama and former President Bill Clinton yesterday to ask whether Obama and Sen. Hillary Clinton's campaigns would commit to having a debate in Philadelphia hosted by Brady and the Democratic City Committee at the National Constitution Center closer to Pennsylvania's April 22 primary, Brady's office confirmed this afternoon. Bill Clinton committed on behalf of his wife's campaign, says Brady's office. Obama said while he didn't think there would be any additional debates scheduled, should that change and there were to be a Pennsylvania debate, it would be in Philadelphia and hosted by Brady and the DCC. An Obama spokeswoman said she was unaware of the conversation, but would get back to us shortly and an e-mail to Hillary Clinton's campaign was not immediately returned. A National Constitution Center spokeswoman confirms the candidates were contacted and said the NCC is very much looking forward to an opportunity to host a presidential debate. We told you last month that the NCC was interested in booking a debate and had put out feelers to both Republican and Democratic campaigns.