A group of 90 House Democrats are calling for the immediate removal of Louis DeJoy as postmaster general, accusing him of sabotaging the Postal Service ahead of the election. Their call comes as DeJoy prepares for two days of scheduled testimony before Congress.

Across the country USPS workers are reporting long delays processing and delivering mail. At one Los Angeles facility, the L.A. Times reported that rodents and insects were swarming parcels of rotten fruit and meat, with baby chicks left dead inside of boxes.

In Texas, Congressmember Joaquin Castro confirmed Wednesday that postal leaders in Washington ordered the removal of six mail sorting machines from a processing plant in San Antonio. A union leader said mail handlers were instructed to cart away tens of thousands of pieces of mail ahead of Castro’s tour of the facility to hide evidence of a backlog.

This comes as emails obtained by Vice show USPS Director of Maintenance Operations Kevin Couch ordered postal managers around the U.S. “not to reconnect / reinstall machines that have previously been disconnected without approval from HQ Maintenance.” Scores of the machines have been removed and broken down into parts nationwide.