Tatiana Sanchez February 10, 2017 Mercury News San Francisco and San Jose are among 20 metropolitan regions with the largest populations of undocumented residents in the United States, according to a first-of-its-kind report by the Pew Research Center. The report highlights a population at the center of a heated debate, as President Donald Trump looks to double … Continue reading San Jose, San Francisco among areas with largest undocumented immigrant populations