Shot 07/06/2011.## President Obama will participate in the first ever Twitter Town Hall at the White House in the East Room. Twitter co-founder and Executive Chairman Jack Dorsey will moderate a conversation between President Obama and Americans across the country about the economy and jobs.## Please cut SOT: 14:18:55: There are some people who say that under the constitution, it’s unconstitutional for congress not to, uh, allow treasury to pay its bills and are suggesting that this should be challenged under the constitution.  I don't think we should even get to the constitutional issue. Congress has a responsibility to make sure we pay our bills. 14:19:20 ##