Jeb Bush thinks the Democratic Party's continued focus on his brother is a sign of desperation.

The Democratic National Committee's latest TV ad, released Friday and airing on cable, features former President George W. Bush saying "you can fool me but you can't get fooled again." No other Republicans appear in the spot.

“It's a loser issue — they have a big L on their foreheads," Jeb Bush told The New York Times. "If that's all they've got, it's a pretty good indication of the problems that the Democrats face in 2010."