On May 3, 2007, the Ronald Reagan Presidential Foundation and Nancy Reagan hosted the first 2008 Republican primary debate in the library's Air Force One Pavilion. The candidates present included Kansas senator Sam Brownback, former Virginia governor Jim Gilmore, former New York City mayor Rudy Giuliani, former Arkansas governor Mike Huckabee, representative Duncan Hunter of California, senator John McCain of Arizona, representative Ron Paul of Texas, former Massachusetts governor Mitt Romney, representative Tom Tancredo of Colorado, and Tommy Thompson, former governor of Wisconsin and President George W. Bush's first secretary of Health and Human Services. Mrs. Reagan, California governor Arnold Schwarzenegger, and Fred Ryan, chairman of the Ronald Reagan Presidential Foundation were among those in attendance. Candidates discussed the Iraq War, the War on Terror, taxes, healthcare, abortion, stem-cell research, gay rights, illegal immigration, and made at least 20 references to Ronald Reagan and his presidency.