The Labor Department reports more than 3.8 million U.S. workers filed for unemployment over the past week, bringing the total number of jobless claims since the start of the pandemic to more than 30 million. Joining the surge are an increasing number of state and municipal employees, whose jobs are threatened by an unprecedented drop in tax revenues. Without more federal aid, local governments say they’ll soon be forced to lay off millions of public employees, affecting health, sanitation, education, transit and other public services.