On Tuesday, Democrats failed to persuade the Senate to approve the Paycheck Fairness Act. What are we to conclude from that outcome? That paychecks will be unfair, to the detriment of America's working women. That's the claim of those supporting the legislation, but this is a myth resting on a deception. The Washington Post's official Fact Checker faulted Obama's claim, noting that "there is a wage gap, but it has declined over the decades—and depending on how the data are viewed, in some cases it barely exists." A difference, in any event, writes Steve Chapman, does not prove discrimination.