The largest federal employee union filed a lawsuit on Thursday seeking to block President Donald Trump's administration from ending collective bargaining for nearly 50,000 Transportation Security Administration officers that staff checkpoints at U.

The Trump administration says the move will improve the passenger experience, but union officials fear it will harm morale and hurt recruiting efforts.

The Department of Homeland Security said Friday that it will cancel TSA’s collective bargaining agreement and stop collecting union dues, a move it says will “strengthen workforce agility.”

Union leaders have warned such a move would diminish working conditions and threaten safety at an agency infamous for low morale.

Unions have filed a lawsuit to prevent the Trump administration from terminating collective bargaining for thousands of TSA officers. The legal action claims the termination is retaliatory, following challenges against the administration's policies.

A union representing Transportation Security Administration workers calls the Department of Homeland Security's decision to end the collective bargaining agreement with them an “unprovoked attack.”

The union for Transportation Safety Administration (TSA) employees is suing Homeland Security Secretary Kristi Noem after she said she was ending a collective bargaining agreement signed last year. The American Federation of Government Employees (AFGE) argues Noem has no power to end an already authorized seven-year contract,

Nearly 2,000 TSA employees will be effected by the termination put in place by the Department of Homeland Security and Trump administration.