Air Force One on a foggy morning at Andrews Air Force Base before departure for Michigan. (Philip Rucker/The Washington Post via Instagram)

President Obama heads to Redford, Mich., on Monday to tour an engine-manufacturing plant and seek auto workers' support for his proposal to avoid the "fiscal cliff."

During Obama's visit to the Daimler-owned facility, the company will announce a new $100 million investment to expand its Detroit Diesel Corp. operations.