The U.S. Postal Service says it will delay plans to cut Saturday mail delivery because Congress isn’t allowing the change.

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.

A statement from the agency’s Board of Governors notes that Congress has passed a spending bill that continues the prohibition against reducing delivery days.

As a result, the board says it believe that Congress “has left it with no choice but to delay implementation” of the five-day-a-week plan.

Missouri Senator Claire McCaskill offered the following statement on the decision:

“The decision by the Postal Service to scrap their hurried, ill-considered plan to eliminate Saturday delivery is the right one, especially for communities across rural America for whom reliable postal service is so important.”

“The fact is, we can put the Postal Service on sound financial footing while preserving its critical services and keeping rural post offices open—and the way we do that is by passing comprehensive, bipartisan postal reform like the Senate did last year. I look forward to again passing meaningful reform legislation, and hope the U.S. House finally joins the Senate in this effort, after their repeated failure to address this critical issue.”