Who does Sen. Ben Nelson of Nebraska work for?

First we see him in the health care debate saying we should kiss the *** of the insurance companies and now he's pissed off that his friends on Wall Street will be required to put up more collateral for their gambling on derivatives . We all know now that these Wall Street fat cats are gambling with money they don't have. When they win they keep the money. When they lose we're held hostage to bail them out. Ben Nelson thinks that's OK? The Republican party, not surprising, thinks it's OK. Where does the tea party stand on this one?