I saw this note from the Election blog ElectoralVote
As the controversy over Mitt Romney's tax returns continues, the one person other than Romney himself who could settle this has been completely silent. That would be Sen. John McCain, who inspected 23 years of Romney's tax returns in 2008 when he was considering Romney as a possible running mate. All he would have to do is hold a press conference and say: "Harry Reid is wrong. I personally saw Romney's tax returns going back over two decades and he paid federal income tax every year." But McCain has said nothing at all at a moment he could help Romney and hurt Reid. Why? It seems very strange. Maybe Reid is right and McCain knows this.I think it will be a good idea to increase the scope of battle and involve more republican leaders. Given that Sen McCain has no major stakes in the 2012 elections, who knows? He might voluntarily or involuntarily give up some information and keep the heat on Mitt Romney.
I also think that there is a possibility that the VP whetting committee saw the tax returns and made a summary statement to McCain's campaign. Paying low or no federal taxes would still have figured prominantly in the report. Either ways, McCain knows something that we don't. Should be interesting to watch McCain if the media units start poking around on this angle
Mitt Romney's strategy on his tax returns has been known from Day 1. Don't show their weakness but weather the storm and hope that media will find a different topic to run after. By keeping up the pressure, the democrats can upset his strategy.
This is an interesting race!