Leaders of two of the biggest USPS unions are skeptical with the appointment, as the future of the courier remains up in the air.

The US Postal Service Board of Governors announced Friday that David Steiner, a board member at FedEx, will be the next postmaster general – a move that comes amid concerns the Trump administration will push for privatization of the mail delivery service,

The announcement of Steiner’s appointment, which heightened concerns from postal unions over possible efforts to privatize the USPS, was made Friday by Amber McReynolds, chairperson of the USPS’ Board of Governors, during a meeting of the independent group that oversees the service.