Simplify the following text for a Grade 7 native English-speaking person.
Original: Willard Mitt Romney ( born March 12 , 1947 ) is an American businessman and Republican political figure who was the 70th Governor of Massachusetts ( 2003 to 2007 ) .
Simplified: Willard Mitt Romney ( born March 12 , 1947 ) was the Governor of Massachusetts from 2003 to 2007 .