Neither snow, nor rain, nor heat, nor gloom of night stays these couriers from the swift completion of their appointed rounds. However, a host of other factors have led the United States Postal Service to financial decline, job losses, and in August, the stoppage of Saturday delivery. Freelance writer David Dayen says he has an idea that could save the country’s second largest employer: in a piece for Pacific Standard Magazine, Dayen suggests the post office get back in the business of banking.