SAN FRANCISCO, CA - OCTOBER 03: John Avalos speaks at the San Francisco Mayoral Candiates Forum at The Fillmore on October 3, 2011 in San Francisco, California. (Photo by Steve Jennings/WireImage) | Steve Jennings
(www.huffingtonpost.com) San Francisco is poised to become one of the first counties in the country to stop detaining immigrants on behalf of the federal government.