WASHINGTON - In a bid to raise revenues ahead of a projected financial crisis for Social Security and Medicare, President Bush is proposing a number of measures that could become tax traps for millions of Americans. Critics allege that Bush is using sleight-of-hand measures that tinker with complex funding formulas linked to the inflation rate. These measures, which include changes affecting Medicare, Social Security and income taxes, aren't advertised as tax increases. But just like hidden tax hikes, they'd raise revenue from millions of unsuspecting taxpayers. Right now, for example, individual seniors with annual incomes greater than $80,000 and couples...