Four U.S. postal workers are facing charges accusing them of stealing over a million-dollars worth of U.S. Treasury checks.  Prosecutors say Joan Mustafa, Erick Garzon, Brenda Canuelas and Jesus Rivera conspired to steal hundreds of checks from the providence mail processing and distribution center.  Some of the checks were sold on the streets for a fraction of their value, while others were deposited into fraudulent bank accounts and quickly withdrawn.  All four suspects are free on bond.