The Latest: Sanders talks Social Security at Iowa union hall

Here are the latest developments from the 2016 race for president, one week out from the Iowa caucuses. All times local. 11:25 a.m. Vermont Sen. Bernie Sanders is meeting with a steel workers local union in Des Moines, making the case for expanding Social Security benefits and fighting trade deals he says would hurt workers. The Democratic presidential candidate says he believes he has "an excellent chance to win" next week's Iowa caucuses "if we have a large voter turnout." Sanders addressed a few hundred members of United Steelworkers Local 310L on Tuesday. The national union has not yet endorsed a presidential candidate. It had offered encouragement to Vice President Joe Biden when Biden...