President Donald Trump’s confirmation Sunday that the United States may accept a presidential aircraft gifted from Qatar marked the latest escalation in his clash with Boeing, which is years behind on its government contract to build the new Air Force One.

Boeing could deliver the new Air Force One jets by 2027, an Air Force official said. That would allow Donald Trump to use them while he is president.

The United States has accepted a luxury jet from Qatar for use as Air Force One, according to the Pentagon, despite concerns from lawmakers and MAGA allies about the financial and ethical implications.