A guess this was just a matter of time:

At the end of a two-day trip through Oregon, Obama was asked Saturday morning about whether it was fair for one of his supporters, Rep. Peter A. DeFazio (D-Ore.), to have invoked McCain's role in a nearly 20-year-old scandal when he introduced Obama at a University of Oregon rally Friday night.

DeFazio had said: McCain "says we need less regulation. Hello! Wall Street mortgage meltdown, Bear Stearns taxpayer bailout, Enron, but, you know, I guess maybe for a guy who was up to his neck in the Keating Five and savings-and-loan scandal, less regulation is better."

DeFazio was referring to McCain being one of the five senators disciplined for improperly trying to influence federal regulators in the late 1980s scandal. McCain has called it "the worst mistake of my life."

I would hazard a guess that you can expect to hear more about this and other ethical questions as McCain tries to pass himself off as The Great Reformer.