Giuliani weighs in on Christie keynote, says 'granny is going to be thrown off the cliff' if nothing is done on Medicare

Last night at the Republican National Convention, New Jersey Governor Chris Christie delivered the keynote address. This morning, fmr. New York City Governor Rudy Giuliani weighs in on how Christie fared in his speech.

"I think his role here was not so much to support just Mitt Romney," Giuliani tells John Berman on "Starting Point." "His role as to keynote speaker was to set the background for what this campaign is going to be about, a contrast of ideas and ways of looking at government."

Berman asks Giuliani to respond to one point in last night's keynote speech, where Christie says: "We are demanding that our leaders stop tearing each other down and work together to take action on the big things facing America. Tonight we are going to do what my mother taught me. Tonight we're going to choose respect over love."

Giuliani responds, saying that what government today lacks is folks who can make tough decisions.

"That's what's lacking in government today," Giuliani says. "They can't make the tough decisions about Social Security and Medicare and Medicaid. I was in front of a group of college students two months ago and said to them, how many of you think you're ever going to collect Social Security and Medicare? Four put up their hands, four out of 1,000. This is ridiculous. We know it's going broke but neither the president nor Congress can get it together to fix it, which is what Paul Ryan is challenging us to do and the Democrats are trying to say, he's going to throw granny off the cliff. Actual granny is going to be thrown off the cliff if he doesn't do anything about Medicare, which he seems afraid to do. I think that's the point [Christie] was trying to make."