How many Heisman Trophy winners are there from USC?

Seven players from USC have won the Heisman Trophy: 1) 1965 - Mike Garrett, RB

2) 1968 - O.J. Simpson, RB

3) 1979 - Charles White, RB

4) 1981 - Marcus Allen, RB

5) 2002 - Carson Palmer, QB

6) 2004 - Matt Leinart, QB

7) 2005 - Reggie Bush, RB