U.S. President Barack Obama kicked off an effort to encourage businesses to keep jobs at home instead of outsourcing them overseas, as he rolled out a new election-year theme on Saturday aimed at courting middle-class voters. In his weekly radio and video address, Obama previewed an event he will hold next week with business executives to highlight the advantages of investing in the United States. "We'll hear from business leaders who are bringing jobs back home and see how we can help other businesses follow their lead," Obama said. The White House Forum on "Insourcing American Jobs" will be held on Wednesday. Executives from more than a dozen companies will attend the Forum. The White House sees an increasing trend of companies deciding to "insource" jobs and invest in U.S.-based plants and factories, according to a White House official. It wants to encourage more businesses to follow that trend, the official said.