Several top Republicans in Congress have expressed concerns about the 747 deal, including that the plane would be a security risk.

Senate Democratic Leader Chuck Schumer says he will hold up all Department of Justice nominations on the Senate floor until he gets more answers about the free Air Force One replacement that President Donald Trump says would be donated by Qatar.

The Constitution's foreign emoluments clause prohibits government officials from accepting gifts from foreign entities without approval from Congress.

Donald Trump is due to attend a summit of Gulf leaders in Saudi Arabia on Wednesday morning, even as a backlash back home over Qatar's proposed gift of a $400m luxury plane threatened to overshadow his “historic” tour of the Middle East.

The Boeing aircraft that Qatar may give the president would require a pricy and complicated overhaul to serve as Air Force One.

Rep. Ritchie Torres (D-NY) is demanding an ethics review of President Donald Trump accepting a $400 million private luxury plane from Qatar. Trump is expecting to receive the plane, already approved by the Justice Department,