McCain opposed both Bush tax cuts, i.e. he voted against them in the Senate, becuase he beleived they disporportinately favored the rich (so he said back then). Considering the statements made in the "Economists Statement Opposing the Bush Tax Cuts" (not the mention the near universal conclusion among most analysists that the Bush tax cuts did not help spur the growth needed to pay for them & simply increased inequality), that might have been a good idea. But now, like George Bush Sr. & Bob Dole before him, McCain has had a miracolous aphiany: that most social scientsits & economists are wrong, that the overaboundend evidence suggesting the tax cuts didn't work is so flawed as to be ignored and that the Bush tax cuts should be made permanent. Obama offered this great insight:
"I respect that John McCain, in the first two rounds of Bush tax cuts, said [they are] irresponsible... [but] somewhere along the line, the `Straight Talk Express' lost some wheels and now he is in favor of extending Bush tax cuts."