Outspoken gay former Congressman Barney Frank was in San Francisco this week and told a gathering of the Commonwealth Club that while he won’t consider a presidential run, he predicted the U.S. could have a gay president in 20 years. Frank, a Massachusetts Democrat, has never shied from speaking his mind, and he held forth on a wide range of topics during an interview with gay radio reporter Scott Shafer of KQED. The audience of over 500 people, including former Ambassador James C. Hormel and his partner, Michael Nguyen, gave Frank a standing ovation as he stepped to the stage....