Did you notice the mail service warning last month that the U.S. Postal Service will run out of money by February, unless Congress expands its borrowing authority by billions of dollars? The Postal Service cited a net quarterly loss of $2 billion as it faces a growing financial crisis after mail volumes fell another 6.3% in the three months ending March 31 — just as operating revenue rose 2.3% to $20.2 billion over the same quarter last year.