A bipartisan group of U.S. senators stands in opposition to the Trump administration’s call to privatize the U.S. Postal Service in an effort to drive efficiency and take out costs, according to a report in GovExec.

The Senate resolution, introduced by Sen. Claire McCaskill, D-Mo., has five Republican cosponsors and is backed by 27 senators in all. This follows a House resolution introduced this summer that has 190 signatures from members of both parties, including more than three dozen Republicans.

“The incentives simply aren’t there for private companies to take mail that last mile for people living in rural communities, and I’m going to fight tooth and nail to ensure that every Missourian—whether in a small town or big city—has access to the critical services the Postal Service provides,” McCaskill told GovExec.

Earlier this year McCaskill cosponsored a bipartisan bill to reform the USPS by removing liabilities, such as prefunded retiree healthcare, and allowing it to pursue new lines of…