Republican lawmakers are increasingly concerned about President Trump’s openness to the adoption of a $400 million aircraft from Qatar as a new Air Force aircraft, an unprecedented move filled with moral and legal issues, even his biggest loyalists are testing his moral and legal issues.

The retention chorus expressed by Republican lawmakers is a rare break with the president, who usually enjoys almost aligned with the party.

Rep. Michael McCaul of R-Texas was among those who questioned the idea Wednesday. McCall said he would certainly chair the House Foreign Affairs Committee and believed countries could provide gifts to other countries, but the luxury Boeing 747 jet could be too far away.

"It's a luxury!" McCall said in a brief interview. “I will definitely sweep to make sure there are no surveillance errors.”

Missouri Senator Josh Hawley said the move shows that Katar wants to be close to the United States but should establish connections with radical Islamic groups. He believes that the president's plane should not come from a foreign country.

"I prefer a large, beautiful aircraft made in the United States, which is made in the United States and bought in the United States," he said.

National security and aviation experts say the proposal is the first reported by ABC News and has many risks. Trump has said that the maintenance of an existing Air Force aircraft is both old and expensive, and he has long complained about the time it took for Boeing to provide a pair of replacements, and he agreed to pay $3.9 billion in his first term.

It was "stupid" to not accept the jet shortly before leaving his current Middle East tour. He defended the plan again Tuesday night, saying the plane was used as a gift to the Department of Defense rather than to him.

"Why should our military and our taxpayers be forced to pay hundreds of millions of dollars, and they can get it for free from a country that wants to do our job well for us," Trump said on social media.

The move would require a transformation of the Katari aircraft as the new Air Force One, a complex process that could extend for years. Trump said the plane will be retired after term and then on display at his presidential library. He also said he would not use it after leaving the office.

Some Republicans say the plan is far from the end

His comments were some of his biggest supporters in Tuesday's comments, including Ted Cruz of Texas and Rand Paul of Kentucky, who said the work presents security and legal challenges.

Some in the party, including Senate Majority Leader John Thune, Rupee (Rs.d.) warns that the plan is far from certain.

"I don't think there is any official there, and that's a hypothetical one," Thun told reporters. "I'm sure if it's no longer hypothetical, and I can assure you there will be a lot of scrutiny on the look of this arrangement."

R-Alaska Senator Lisa Murkowski said there were enough questions surrounding the gift to trigger the president's pause.

"I have a lot of concerns," she said. "I don't think it will move forward, but maybe? Maybe they look at it differently than I do."

Others in the party are less concerned and dismissed concerns about gift representatives surveillance on potential pathways in the United States

"Yes, 100% support it," said Oklahoma Senator Markwayne Mullin, a member of the Armed Forces Committee.

"For anyone who feels safe about this, they have absolutely no knowledge of intelligence. We are the best people in the world, we understand what they can do, and we understand how to find it better than anyone else," Mullin said.

Democrats say the plan could impact Qatar's arms sales

Senate Democrats have planned to propose a disapproval resolution on the plan to give planes, but some are expected to fail. Democrats say the gift is clearly in violation of the Constitution's foreign Emer's clause, which prohibits office holders from accepting "a gift of any kind, "from any king, prince or foreign country."

Rhode Island Democratic Senator Jack Reed, the party's top member of the Senate Armed Forces Committee, said the Democratic plan requires the Department of Defense to estimate the aircraft's estimates - a figure he believes could bring the total price tag close to $1 billion.

“These planes are so unique,” ​​Reed said. “You have to make sure there is nothing on the plane that is the smart source for other people – literally, you have to take the plane apart and put it together.”

He also noted that "another irony" is that the U.S. manufacturer that may need to revamp the plane for the president is Boeing - a company that has signed up to build new aircraft to be used as Air Force One.

Senator Chris Murphy (D-Conn. So he pointed to the upcoming vote to approve U.S. arms sales to Qatar because of the opportunity to record Republicans.

“There is no doubt that the vote will be the agent you think if a foreign government can hand over $400 million in aircraft to the U.S. president.”

The debate about the planes has put many Republicans in a difficult position on how to react. House Speaker Mike Johnson, R-la. , avoid solving the dilemma with reporters on Wednesday. Johnson said his focus was on the settlement bill that House Republicans hoped to enact on Memorial Day to set the president's domestic agenda.

"There are some authorities police administrations," Johnson said. "That's not me."

Despite Johnson's comments, Congress does have the power to investigate the executive branch. For example, when Democrats controlled the House during Trump’s first term, they oversaw Trump’s hotels and maintained his arrangements for rentals and money for foreign VIPs who lived in the hotel, which violated ethics.

Luke Garrett, Elena Moore and Barbara Sprunt contributed the coverage.