CINCINNATI (AP) — About 50 demonstrators picketed outside a southwest Ohio post office to protest the proposed end to Saturday mail deliveries.

The postmaster general says ending Saturday mail deliveries would save $2 billion a year.

The Cincinnati Enquirer reports the rally Sunday outside Cincinnati’s main U.S. Postal Service office was conducted mostly by letter carriers. It was part of a national effort organized by Delivering for America, a group dedicated to preserving six-day delivery.

The president of the Ohio State Association of Letter Carriers says more than 100 similar events were held around the country to send a message to Congress about the need for continuing Saturday delivery.

Representatives from local postal service union chapters say they don’t think the reduction in service days would solve the postal system’s core problems.