Back in April Timmy Geithner said there was no chance that the US credit rating would take a hit. Treasury Secretary Tim Geithner said Tuesday there is "no risk" the U.S. will lose its top credit rating amid a new analysis that revised its outlook on American debt to "negative." Geithner took to the airwaves of financial news networks to push back against a report Monday by Standard & Poor's that lowered its outlook on U.S. debt to "negative," reflecting political uncertainty over whether lawmakers will reach an agreement to address long-term debt. There is no chance that the U.S....