Vice President Joe Biden. (AP Photo/John Locher, File)

Vice President Biden is heading to Iowa next week. Cue the presidential speculation! Sort of.

Biden will make an official White House visit to the Hawkeye State next Wednesday, an aide confirmed. While there, he will speak at a  Nuns on the Bus "We the People, We the Voters" tour kickoff event. News of Biden's visit was first reported by the Des Moines Register.

Biden was recently in New Hampshire, another early nominating state. Meanwhile, a reunion of former Biden staffers has been scheduled for Sept. 16. It's all fueled speculation that Biden may be gearing up for a run at the top job.

But with presumed Democratic frontrunner Hillary Clinton appearing to move toward a run, a 'Biden for president' campaign is looking less likely. This weekend -- just three days before Biden arrives -- Clinton will make her first trip to Iowa since her tough 2008 caucus defeat there.

It's hard to see Biden taking on Clinton if she runs. But if she doesn't, it's hard to see him sitting out the race.