Barbara Bush, the daughter of former president George W. Bush, is advocating gay marriage in a recent PSA filmed by The Human Rights Campaign. It's a very public way for the 29-year-old to disagree with the ban that her father tried to put in place while in office. But perhaps her political views are more in line with her mother Laura's. The former first lady said she disagreed with her husband's opinions on gay marriage and choice in an interview with Larry King last year.