USPS Won't Cut Saturday Mail After All Post Office says Congress left it no choice By Newser Editors and Wire Services Posted Apr 10, 2013 10:52 AM CDT 31 comments Comments A USPS mail carrier turns down the flag on a mailbox in this file photo. (David Goldman) (Newser) – The US Postal Service says it will delay plans to cut Saturday mail delivery because Congress isn't allowing the change. As expected, Congress "has left [USPS] with no choice but to delay implementation" of the five-day-a-week plan, the agency's Board of Governors said in a statement today. The Postal Service said in February that it planned to cut back in August to five-day-a-week deliveries for everything except packages, as a way to hold down losses. But Congress has since passed a spending bill that continues the long-time prohibition against reducing delivery days.