The U.S. is allowing more than 80,000 visas to vanish at the end of September, despite having a backlog of more than a million skilled immigrants who have been waiting — sometimes as long as decades — for their green cards. Most of them are tech workers from India, including in Silicon Valley. Chronicle reporter Deepa Fernandes joins host Cecilia Lei to talk about their desperation, and the impact it's having on their families. | Unlimited Chronicle access: sfchronicle.com/podLearn more about your ad choices. Visit megaphone.fm/adchoices