Going after Tom Delay might end up biting some Congressmen in the ass. Especially a certain Congressman from my home state, Harold Ford, Jr. Money quote:

From 1998 to 2003, he took 61 privately funded trips. During that period, he failed to file a single travel-disclosure form with the House clerk, as required by the chamber's ethics rules.

Of course having your uncle arrested for taking bribes doesn't help too much either. VOLuntarilyConserative has a good roundup.