Democrats and Republicans are finding little common ground, leading some Senators to say an independent investigator is needed.
Those who wrote the memos are not in the clear, he says, but any investigation must be above partisanship.
Republicans are poised to cut spending, increase tax cuts, and refocus on homeowners.
Saying that he had repeatedly bowed to political pressure and had made misleading statements to Congress, four Democratic senators Tuesday called for Stephen Johnson to resign as administrator of the Environmental Protection Agency.
Congress poised to override President Bush for only the second time.