his agenda forward. >> reporter: the problem, this is part of it. >> heller is now standing with pelosi. unacceptable. if you're opposed to this bill, we are opposed to you. >> reporter: a political action committee run by the president's allies fire on his own party's senators for not backing the health care measure. the ads have been pulled but analysts are slack jawed. dean heller was already considered at risk for losing his seat, possibly cutting the republican hold on the senate to a single vote or worse. >> you can't attack the most vulnerable republican that you have, you know, over something like this and hand the democrats a messaging strategy that's going to help them defeat him. >> reporter: but the president also openly criticized the version of the plan passed by the house. >> mean, that was my term. >> reporter: again, giving democrats a free shot at his party's expense.