The U.S. Postal Service is one of our most popular and important government agencies. It provides universal service six days a week to every corner of America, no matter how small or remote. It supports millions of jobs in virtually every other sector of our economy. It provides decent-paying union jobs to some 500,000 Americans, and it is the largest employer of veterans.

Whether you are a low-income elderly woman living at the end of a dirt road in Vermont or a wealthy CEO living on Park Avenue, you get your mail six days...