The partial shutdown of the Federal Aviation Administration will continue until September because Senate lawmakers left town without resolving a stalemate over rural air service subsidy cuts.
The partisan acrimony has left nearly 4,000 FAA workers jobless.
The government may already have lost more than $200 million in taxes on airline tickets and may lose up to $1 billion in coming weeks.
The bill authorizing the agency to collect taxes has expired and the Senate hasn't passed a new one.
Air traffic controllers will remain on the job during the shut down.