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

DHS said that a “select few poor performers” had been taking advantage of the agreement’s family and sick leave policy. DHS’s press release also claimed that nearly 200 officers, out of TSA’s screening workforce of approximately 47,000, work “full time” on union matters.

The move, which the TSA union called an 'unprovoked attack,' marks a major effort to dismantle union protections under the Trump administration.