A growing number of U.S. lawmakers are raising questions about the potential for SpaceX CEO Elon Musk to interfere or take over a $2.4 billion Federal Aviation Administration telecommunications contract with rival Verizon .

Elon Musk said Thursday that Verizon’s efforts to provide a critically needed upgrade to the FAA’s air traffic control system is failing. And he said that it is important that Starlink, a unit of his SpaceX satellite and rocket company,

The $2.4 billion contract was awarded to Verizon in 2023, according to the Post, and upgrades the systems that allow FAA offices to communicate with air traffic control facilities. But Musk has been critical of Verizon in recent days,