What a Federal Judge's Challenge to a Halligan Appointment Means

A federal judge has questioned whether a Halligan appointment followed the law

In 2024, U.S. District Judge Kathryn Kimball Mizelle challenged the appointment of Kristen Halligan to the position of General Counsel at the National Labor Relations Board (NLRB). The judge ruled that Halligan's appointment violated the Federal Vacancies Reform Act, a law that sets strict rules about who can temporarily fill senior government jobs and for how long.

Mizelle found that the NLRB had appointed Halligan without following the correct legal steps. Specifically, the judge said the agency did not have the authority to put Halligan in the role because the position had not been vacant long enough, or because the person who made the appointment did not have the power to do so under federal law. This type of challenge is rare and signals a dispute over how agencies interpret their own authority to staff positions.

The ruling does not automatically remove Halligan from the role, but it creates legal uncertainty about whether her decisions and actions in that position are valid. Other parties can use the ruling to challenge decisions she made while serving as General Counsel.

Key Takeaways

• A federal judge ruled that Halligan's appointment to NLRB General Counsel may have violated the Federal Vacancies Reform Act, which limits how agencies can fill empty senior positions.
• The challenge centers on whether the NLRB followed the correct legal process when it appointed Halligan, not on her qualifications or performance.
• The ruling creates questions about the validity of decisions Halligan made while serving in the role, which other parties can use to challenge NLRB actions.
• The Federal Vacancies Reform Act requires agencies to follow specific steps and timelines when a senior position becomes empty, and violations can lead to court challenges.

What the Federal Vacancies Reform Act requires

The Federal Vacancies Reform Act, passed in 1998, sets rules for how federal agencies can fill high-level positions when they become empty. The law exists because Congress wanted to prevent agencies from leaving important jobs unfilled for long periods or from putting people in charge without proper oversight.

Under the law, an agency can temporarily assign someone to a vacant senior position, but only if that person meets one of three conditions: they already work in the agency and hold a position at a certain pay level, they were previously confirmed by the Senate for a similar role, or they are the agency's deputy or second-in-command. The temporary assignment can last no longer than 210 days, though there are limited exceptions that can extend it to 300 days.

If an agency violates these rules—for example, by putting someone in the role who does not meet any of the three conditions, or by keeping them there too long—a court can declare the appointment invalid. This does not necessarily mean the person must leave when ready, but it means their authority to act in that role is questionable.

Why Judge Mizelle's ruling matters for the NLRB

The NLRB is an independent agency that handles labor disputes between workers and employers. Its General Counsel is one of the most powerful positions in the agency—this person decides which cases the NLRB will pursue and represents the agency in court. Because the role is so important, who holds it and how they got there matters to workers, employers, and unions.

Mizelle's challenge suggests that the NLRB may not have followed the proper legal steps when it placed Halligan in the General Counsel role. If the judge's ruling stands, it could mean that decisions Halligan made—such as which cases to bring or how to settle disputes—might be challenged as invalid because they came from someone who was not legally appointed to the position.

This type of ruling can create a ripple effect. Employers or unions who lost cases that Halligan's office brought might use the ruling to ask a court to overturn those decisions. The uncertainty can also make it harder for the NLRB to enforce its own orders while the legal question remains unresolved.

The difference between a temporary appointment and a confirmed appointment

Federal law distinguishes between two types of appointments to senior positions. A temporary appointment under the Vacancies Reform Act is meant to be short-term—it allows an agency to keep operating while a position is empty, but it does not give the person the full authority of a permanently appointed official. A confirmed appointment happens when the President nominates someone and the Senate votes to approve them; this is the permanent, full-authority version.

Halligan's appointment was temporary, not confirmed by the Senate. This means she was filling the role on an interim basis while the NLRB waited for a permanent General Counsel to be nominated and confirmed. The legal question in Mizelle's ruling is whether the NLRB followed the rules for temporary appointments—not whether Halligan herself was may have access to or whether a permanent appointment would have been legal.

What happens next after a vacancies act challenge

When a federal judge rules that an appointment violated the Vacancies Reform Act, the case usually does not end there. The agency often appeals the ruling to a higher court, arguing that it did follow the law or that the violation was minor enough not to matter. The other side—in this case, whoever challenged Halligan's appointment—argues that the ruling should stand.

While the appeal is pending, the person in the role may continue to work, or the agency may remove them and appoint someone else who meets the law's requirements. There is no automatic removal. The real consequence comes if someone uses the ruling to challenge a specific decision that Halligan made—for example, a case she brought against an employer. That employer could argue to a court that the decision is invalid because Halligan was not legally appointed to make it.

The NLRB could also respond by nominating someone for permanent, Senate-confirmed appointment as General Counsel, which would end the temporary appointment and the legal uncertainty around it.

Who can challenge a vacancies act appointment

Not everyone can walk into court and challenge an appointment under the Vacancies Reform Act. Generally, the person or organization challenging the appointment must have been directly affected by a decision that the temporarily appointed person made. For example, an employer who received a complaint from the NLRB's General Counsel could challenge that complaint by arguing the General Counsel was not legally appointed. A worker or union could do the same if they were harmed by a decision the General Counsel made.

In Halligan's case, someone with a direct stake in an NLRB decision—likely an employer or union involved in a labor dispute—brought the challenge to court. The judge then ruled on whether the appointment itself was legal, separate from whether the underlying decision was correct.

How this type of challenge affects government operations

Vacancies Act challenges are uncommon, but they can create significant disruption when they happen. Agencies rely on temporary appointments to keep operating when positions are empty, especially for roles that require Senate confirmation—those can take months or years to fill. If courts frequently ruled that temporary appointments were invalid, agencies would struggle to function.

At the same time, the law exists because Congress wanted to prevent agencies from operating indefinitely without proper oversight. The balance is meant to allow temporary staffing while still holding agencies accountable to the rules. When a judge like Mizelle rules that an agency violated the law, it sends a signal that the agency must follow the process more carefully next time.

For the NLRB specifically, the ruling creates pressure to either appeal the decision, appoint someone new who clearly meets the law's requirements, or move forward with a permanent, Senate-confirmed General Counsel.

Frequently Asked Questions

Does the judge's ruling mean Halligan has to leave her job right now?

No. The ruling does not automatically remove Halligan from the position. It means her appointment may have been illegal, which creates legal uncertainty about her authority. The NLRB can appeal the ruling, and Halligan can continue working while the appeal is pending. However, decisions she made can now be challenged in court by people who were affected by them.

What is the difference between this challenge and a regular disagreement about a decision Halligan made?

A challenge to a specific decision asks whether that decision was correct—for example, whether the NLRB was right to bring a case against a particular employer. A Vacancies Act challenge asks whether the person who made the decision had the legal authority to make it at all. If the appointment was illegal, the decision itself may be invalid regardless of whether it was correct.

Can the NLRB fix this by nominating Halligan for permanent confirmation?

Yes. If the President nominates Halligan for permanent General Counsel and the Senate confirms her, she would have full legal authority and the temporary appointment question would become moot. However, Senate confirmation is a separate process that can take many months and is not may provide to succeed.

Who brought this challenge to court?

The ruling does not always make clear who the challenger is, but typically it is an employer or union involved in a case that Halligan's office brought. They used the Vacancies Act violation as a reason to challenge the underlying decision or to argue that the General Counsel did not have authority to bring the case in the first place.

Does this ruling affect other temporary appointments at the NLRB or other agencies?

This ruling applies specifically to Halligan's appointment. However, it may signal to other agencies that courts are paying close attention to whether temporary appointments follow the Vacancies Reform Act. Other agencies may review their own temporary appointments to make sure they comply with the law.