In the "Oh No They Didn't" Category

The New York Times Dealbook reports that S&P alleges that the US government's lawsuit against the rating agency for fraud was retaliation for the downgrade of US Treasuries.  S&P cites in particular a conversation that former Treasury Secretary Geithner had with S&P's Chairman, Harold McGraw, III.  Could Geithner have called Attorney General Eric Holder to direct a U.S. Attorney to file suit against S&P solely for the downgrade?  How would this compare to Bridgegate?