Sen. Hagel says McCain ad is on "thin ground"

There’s a new ad out from Republican presidential hopeful John McCain that bashes Democrat Barack Obama for not visiting wounded troops during his visit to Germany. Nebraska U.S. Senator Chuck Hagel told CBS’s “Face The Nation” on Sunday that McCain and Obama are better off focusing on policy differences. 
“I think John is treading on some very thin ground here,” Hagel said. “I admire and respect John McCain very much. I have a good relationship because I think the next president is going to inherit an inventory of challenges as big as Franklin Roosevelt inherited on March 4th, 1933.”
Hagel said it’s going to take a bipartisan consensus to govern and the next president will need to bring the country and world together. Hagel would not say for whom he plans to vote for this fall in the presidential race. “I’m not going to get into the politics of this. Where I think I can play the most significant role for my country, not my party, I actually put the country before the party, is, I use whatever expertice I can to help the next president of the United States govern this country.”
Hagel, a Republican, just returned from a trip to the Middle East with Democratic presidential candidate Barack Obama.