Gordon Johndroe

On a day when GMA ran two warm-'n-fuzzy items about Barack Obama, the ABC show found yet another way to hit President Bush—literally and figuratively stooping to bash Barney, the presidential pooch.  Relying on some ambiguous remarks by an aide to Pres. Bush, weekend co-anchor Bill Weir declared that "Barney's a jerk" and "everyone hates him."View video here.Weir teased the segment in the show's…