Barney Frank has enemies, even 30,000 feet in the air. Flying back to Boston from LA yesterday, the congressman was assailed by a pair of ophthalmologists upset about the health care reform bill. An argument ensued that prompted some passengers to wonder if the plane might be forced to land. "No one was calming things down and people were standing up shouting," said Brooke Sexton, who was seated seven rows behind Barney. Accustomed as he is to being conservatives's favorite bad guy, Frank mostly ignored the doctors's taunts, Sexton said, but the congressman's partner, Jim Ready, did not. The problem...