Behind the Anna Nicole Smith circus lies an important truth about fathers’ rights. The long line of opportunistic men who have lined up to be Smith’s baby’s dad since Smith’s death has diverted attention from the case’s key fact: photographer Larry Birkhead, Smith’s ex-boyfriend, has a legitimate claim to paternity. He has been thwarted for several months by the same legal maneuvers which are often employed to separate fathers from their children. Long before Smith died and her estate became an issue, Birkhead had filed for a DNA test to determine the paternity of Smith’s baby. In December he told...