Whose Money Is Obama Spending To Help The Coakley Campaign?

Since when does a president get involved in a campaign for a replacement Senator? And is he spending American tax dollars to do this? Does Obama really want to settle the ongoing health care issue that badly? My guess is no. I believe he's simply determined to complete at least one of the many tasks he promised during his own campaign. Apparently, he'll do anything to help lift his ratings in the polls--and it obviously doesn't matter who he has to bribe or who he has to 'help' in their campaign to see that end. Why are we putting up with such a self-serving president?