Hills served as U.S. Trade Representative under President George H. W. Bush from 1989 to 1993. She was under pressure to implement the 1988 Omnibus Foreign Trade and Competitiveness Act to go after countries that were considered to be trading unfairly with the U.S. The New York Times called Section 301 of the Act her “crowbar”, which enabled the U.S. to impose tariffs as high as 100%. She initially went after Japan, Brazil and India, although the Bush administration later decided Japan had changed its ways.