Resident fellow in law and policy Andrew Arthur with Center for Immigration Studies said it's not the first attempt to decertify immigration judges' union. The Clinton administration unsuccessfully tried in 1999. But, since then immigration judges have been given more authority.
"To create the record, make findings a fact but are dispositive throughout, not just the administrative proceedings, but actually through the courts of appeals and all the way up to the Supreme Court," said Arthur.
"Those changes really have moved immigration judges into the position of management officials such that they are not entitled to be a member of a bargaining unit under the FLRA."
The union doesn't have an effect on immigration cases, but rather an immigration judge joining a union or being taken off the bench.
Depending on the decision, the union could take it to the FLRA, or DOJ can make an appeal.
Immigration judges decide who can stay in the country legally and who should be deported.