A growing petition opposing major changes to the U.S. Postal Service (USPS) has drawn tens of thousands of signatures, as the agency warns it is facing a serious and worsening cash shortfall. The warning follows USPS reporting a net loss of nearly $2 billion for the three months ending March 31. Postmaster General David Steiner previously told The Associated Press that without congressional intervention or major funding reform, the agency could struggle to pay vendors and employees as early as