Romney is slated to attend a private fundraising event on Thursday in Omaha, which will be led by Gov. Dave Heineman. Following the fundraiser, Romney will hold a public rally around 1 p.m. at Rick's Cafe Boatyard in Omaha along the Missouri River.
Romney is the presumed Republican presidential nominee, although the GOP will formally select its nominee at the party's national convention in Tampa, Fla., in late August.