Justices are NOT supposed to be as powerful as they've become. They are not supposed to carry out ANY Presidents policies.
In order of power the founding fathers meant the branch of government that was closest to the people, the Congress, to have the most power, then the President, then last, the furthest removed, the Supreme court. Activist judges, legislating from the bench, have usurped the power of Congress and forced the President into a subordinate role.
That being said, we're forced to live in the present, and while I'd like to see the Congress and President stand up to activist judges and even work to remove the worst of them, but I see that it's not going to happen anytime soon. They're there for life, no matter what they do, despite what the FF's intended.
But I ask you, can we trust McCain, Rudy or Mitt to appoint conservative justices? McCain delights in going against conservatives, Mitt's a liar and has flip flopped enough that I don't know what he really believes in, and Rudy won't keep an oath to his wife, how can we trust him to keep an oath to us?
Huckabee is another flip flopper. He talks a good story now, but he was doing something else a year ago.