In the minority after Republican gains in November's elections, Sen. Dick Durbin of Illinois was sworn in Tuesday with a temporary gig: filling in for ailing Democratic leader Harry Reid.Durbin, 70, said the Senate minority leader was "making a speedy recovery from his New Year's Day run-in with some exercise equipment."With Reid on the injured roster, it fell to Durbin to lead his party's congratulations to Senate Majority Leader Mitch McConnell of Kentucky.Durbin did so by quoting the late Everett Dirksen of Illinois, a Republican and former Senate minority leader: "I am a man of fixed and unbending principle, the...