When Washington is in crisis and every other option has fallen to pieces — whether on rescuing Wall Street, rewriting national security rules or agreeing on a budget — Senate Majority Leader Harry Reid, a Democrat, and Minority Leader Mitch McConnell, a Republican, are usually the ones who put it all back together.

But if the two wily 70-somethings who are trying to resolve the current crisis make a deal once again, they will do so despite an increasingly bitter and distant relationship that some say is so fraught with animosity that it endangers their talks.

The rift traces to 2010, when Reid thought McConnell wasn't up-front about how aggressively he would try to help defeat the Democrat in his tough re-election race in Nevada. McConnell, now dealing with a difficult campaign of his own in Kentucky, is incensed that Reid appears to be more than returning the favor.