President Trump argued on Sunday that the Biden administration made the country's air traffic control system worse.

"The Biden Administration was an FAA disaster. Everything they touched turned bad. Big money spent unwisely, making an old and broken system worse than when they began," Trump wrote on Truth Social in response to a Just the News article about the Federal Aviation Administration ground stop. 

"We have the knowledge and plan for the Flight Control Systems, we need Congress to give the money, FAST! Our FAA is doing a great job, and is ready to go," he added.

Trump called on Congress to approve additional funding for a modernized ATC system.

"If Congress approves the desperately needed money for Air Traffic Control, we can get it built quickly and efficiently. It will be the BEST SYSTEM anywhere in the World," he wrote.

"Much of our current air control system is 50 years old - RIDICULOUS! We have already started the work, but it should be done all at once, not in drips and drabs. Congress must approve. The Biden Administration set it back years!" he added. 

Former Transportation Secretary Pete Buttigieg has argued that the Biden administration “did a lot to upgrade the system.”

"When we had an outage, I didn't stand there complaining about the Trump administration. We got to work," he said. "This should not be about politics."