(WASHINGTON, D.C.) - Door to door delivery from the U.S. Postal Service could end if a proposal working its way through Congress becomes law. The House Oversight and Government Reform Committee has approved a plan to convert about 15-million addresses to communal or curbside mail boxes over the next 10 years. It's an estimated cost savings of about two-billion dollars a year. Those who have disabilities would be able to apply for a waiver if this scenario becomes the model for the U.S. Postal Service.