" ... the supreme court interprets the constituion...."
They are a check.
I would definitely support Guiliani. But. His liberal positions on this or that would not bother me so much if I thought he could be counted on to continue appointing originalists.
I believe Mitt Romney also has great leadership qualities. He's sometimes slammed as a little bit false, i.e. politician-like. Who cares. He may have taken some liberal positions on this or that, but I definitely think he understands about originalism.
No, they are not. You need to brush up your constitutional history and read up on the federalist papers.