The new federal program that allows people to order free at-home COVID-19 tests through the mail launched Tuesday, one day early. The order form looks pretty simple, but wasn’t easy for everyone who tried to submit orders. Guest: Carly Severn, KQED Senior Engagement Editor The omicron surge has jammed hospital emergency rooms with patients. Many of them arrive by ambulance, creating long waits. But officials in Los Angeles County say ambulance response times are improving.  Reporter: Jackie Fortier, KPCC  With the omicron wave of COVID-19 spreading fast, immigration courts in San Francisco are postponing many hearings. But that pause could be a ray of hope for people in an expedited asylum process. Reporter: Tyche Hendricks, KQED