Robert Jones "Rob" Portman (born December 19, 1955) is the junior United States Senator from Ohio. He is a member of the Republican Party. He succeeded retiring Senator George Voinovich.
From 1993 to 2005, Portman served in the United States House of Representatives from 1993 to 2005, representing Ohio's 2nd congressional district, which stretches along the Ohio River from the Hamilton County suburbs of Cincinnati east to Scioto County and Pike County. Portman won seven consecutive congressional elections with over 70 percent of the vote.
Portman served in two federal cabinet positions under the administration of President George W. Bush. From May 2005 to May 2006, he was the U.S. Trade Representative. From May 2006 to June 2007, he was Director of the Office of Management and Budget (OMB).