DES MOINES — Front-running Democratic presidential candidate Hillary Clinton will be making a return trip to Iowa next week.Officials with the Clinton campaign say the former U.S. Secretary of State, New York senator and first lady has slated organizing events in Iowa City and Ottumwa next Tuesday. Clinton’s trip “will focus on speaking with Iowans about her campaign to fight for an America where everyone can get ahead and continuing to build a robust grass roots organization in Iowa,” according to a news release announcing Clinton’s Tuesday itinerary.Clinton will attend an organizing event at the Iowa City Public Library at 11:45 a.m.