WASHINGTON (Reuters) - The U.S. Senate's number two Democrat and others in his party criticized a Republican House of Representatives committee chairman on Sunday for releasing government documents related to last month's violent attack on the U.S. mission in Benghazi. Senator Richard Durbin charged that Darrell Issa, chairman of the House Oversight and Government Reform Committee, had politicized the Benghazi events during a presidential election campaign, in particular by releasing sensitive papers with the names of Libyans who have worked with the United States. ...