A politician can claim that and get some votes and contributions, and then later when nothing like that happens nobody will remember.
My concern is that unless there is a clear delineations made between RINOs in particular and Republicans in general, the average citizen is going to say "Republican President, Republican controlled House, Republican controlled Senate - the Republicans screwed up!"
I don't know, maybe it's too much to expect of President Bush to ride herd on Congress, given the current political climate.
A question you may know the answer to - could the President issue some sort of Executive Order allowing for drilling in certain areas (including ANWR)?