Of all the domestic policy differences between the Bush and Obama administrations, just about the sharpest and most telling may be their opposite responses to the drive by Republican-dominated states to require voters to present photo identification at the polls. The Bush administration thought photo ID was a dandy idea. The Obama administration recognizes it for what it is: a cynical effort to insure that fewer young people and members of minority groups (read, likely Democratic voters) are able to cast a ballot.