The U.S. Postal Service is a rare thing: a beloved federal agency. Mail carriers visit every household in the country, and they are the only federal employees most of us see on a regular basis. But the service has been in serious financial trouble for years, a problem exacerbated by the coronavirus crisis. The survival of the system depends on intervention from Congress, but President Trump has called the postal service “a joke,” and without congressional intervention it could be forced to cease operating by the end of the year. Casey Cep, a New Yorker staff writer and the daughter of a postal worker, joins Dorothy Wickenden to discuss the past and future of the U.S.P.S.