After constituent protests over President Donald Trump’s executive order on immigration and questions about how it has been carried out at airports across the country, U.S. Rep. Michael McCaul has softened his support for the measure.

McCaul, a seven-term Republican from Austin who had advised the Trump campaign on how to address Muslim immigration, now says he wants the House Homeland Security Committee that he chairs to review the legality of Trump’s executive order on immigration and refugees.

In a Facebook post Monday night, McCaul said "the Executive Order went too far," saying the country "should not be turning away" people who had already been lawfully approved to come to the United States.

The order indefinitely prohibits Syrian refugees from entering the United States, suspends all refugee admissions for 120 days and blocks citizens of seven Muslim-majority countries, refugees or otherwise, from entering the United States for 90 days. Those seven countries are Iran, Iraq, Libya, Somalia, Sudan, Syria and Yemen.

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"This issue could have been avoided through better coordination between the White House, Congress, and the agencies on the front lines, which is more important now than ever," he wrote.

That sentiment was absent from a statement he had put out Friday, upon the signing of the order by Trump.

"Today, President Trump signed an order to help prevent jihadists from infiltrating the United States," he said. "With the stroke of a pen, he is doing more to shut down terrorist pathways into this country than the last Administration did in eight years."

McCaul, who served on the Trump campaign’s national security advisory board and who had helped craft a memo for Trump about how to handle Muslim immigration in the lead-up to the debates, wasn’t available Tuesday to speak with the American-Statesman, according to a spokeswoman. But he has said Trump didn’t consult with him before signing his executive order.

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McCaul suggested on Facebook that Trump departed from McCaul’s advice to "go after the real enemy—radical Islamist terrorists" by improving security screening.

Through his spokeswoman, McCaul declined to release a copy of the memo to the Statesman, saying that it isn’t a public document.

McCaul’s district — which includes parts of West and Central Austin — encompasses parts of Bastrop and Lee counties as it stretches to Houston’s western suburbs.

On Sunday, as stories about waylaid travelers rose and as pushback to the order intensified — opponents say the Trump measure is an unconstitutional attempt to bar Muslims from entering the U.S. — McCaul put out a follow-up statement: "In light of the confusion and uncertainty created in the wake of the president’s Executive Order, it is clear adjustments are needed. … We must be focused instead on putting in place tougher screening measures to weed out terror suspects while facilitating the entry of peaceful, freedom-loving people of all religions who see the United States as a beacon of hope."

McCaul told the Huffington Post on Monday night he wanted to review the order, but no hearing has been set.

"I think from a legal basis, you have to be careful," McCaul said.

"The initial statement sounds like it was motivated by partisan politics," said Jon Bond, a Texas A&M University political science professor who specializes in relations between Congress and the president.

The rethinking of the position, "sounds like the responsible thing for an elected official to do," he said.

Bond said McCaul’s shifting position might have been influenced by letters from security experts suggesting the Trump order would make America less safe.

Jim Henson, who teaches about politics at the University of Texas, said protests have likely made it harder for McCaul to maintain his initial level of support.

"But for somebody with a national security orientation like Congressman McCaul," he said, "there are plenty of substantive reasons to be skeptical that the administration’s move was productive, good policy."

Texas A&M assistant professor Joshua Shifrinson, who specializes in international relations and security issues, said McCaul could be backing away from full support of the order because it’s not the policy he had advocated, it could be a constituency issue — "he represents a good part of Austin, and it skews liberal" — or he could be facing heat from other members of Congress who want to exercise some oversight on a policy that was poorly implemented.

"It’s probably some combination," Shifrinson said. "The executive order is a disaster of an executive order because it simultaneously punishes people who have been vetted and have a legal right to be in the United States, antagonizes allies, and causes mass chaos because it was poorly coordinated with agencies that have to implement it."