THE WINDOW'S CLOSING:

Cloistered in the White House, he now has little access to his fans and supporters -- an important source of feedback and validation -- and feels increasingly pinched by the pressures of the job and the constant presence of protests, one of the reasons he was forced to scrap a planned trip to Milwaukee last week. For a sense of what is happening outside, he watches cable, both at night and during the day -- too much in the eyes of some aides -- often offering a bitter play-by-play of critics like CNN's Don Lemon.

Until the past few days, Mr. Trump was telling his friends and advisers that he believed the opening stages of his presidency were going well. "Did you hear that, this guy thinks it's been terrible!" Mr. Trump said mockingly to other aides when one dissenting view was voiced last week during a West Wing meeting.

But his opinion has begun to change with a relentless parade of bad headlines.

Mr. Trump got away from the White House this weekend for the first time since his inauguration, spending it in Palm Beach, Fla., at his private club, Mar-a-Lago, posting Twitter messages angrily -- and in personal terms -- about the federal judge who put a nationwide halt on the travel ban. Mr. Bannon and Reince Priebus, the two clashing power centers, traveled with him.

By then, the president, for whom chains of command and policy minutiae rarely meant much, was demanding that Mr. Priebus begin to implement a much more conventional White House protocol that had been taken for granted in previous administrations: From now on, Mr. Trump would be looped in on the drafting of executive orders much earlier in the process.

Another change will be a new set of checks on the previously unfettered power enjoyed by Mr. Bannon and the White House policy director, Stephen Miller, who oversees the implementation of the orders and who received the brunt of the internal and public criticism for the rollout of the travel ban.

Mr. Priebus has told Mr. Trump and Mr. Bannon that the administration needs to rethink its policy and communications operation in the wake of embarrassing revelations that key details of the orders were withheld from agencies, White House staff and Republican congressional leaders like Speaker Paul D. Ryan.

Also, Mr. Priebus has created a 10-point checklist for the release of any new initiatives that includes signoff from the communications department and the White House staff secretary, Robert Porter, according to several aides familiar with the process.

Mr. Priebus bristles at the perception that he occupies a diminished perch in the West Wing pecking order compared with previous chiefs. But for the moment, Mr. Bannon remains the president's dominant adviser, despite Mr. Trump's anger that he was not fully briefed on details of the executive order he signed giving his chief strategist a seat on the National Security Council, a greater source of frustration to the president than the fallout from the travel ban.

It is partly because he is seen as having a clear vision on policy. But it is also because others who had been expected to fill major roles have been less confident in asserting their power.

Jared Kushner, Mr. Trump's son-in-law, occupies a central role in the administration and has been present at most major decisions and photo ops, but he is a father of young children who has taken to life in Washington, and, along with his wife, Ivanka Trump, has already been spotted at events around town.

Mr. Bannon has rushed into the vacuum, telling allies that he and Mr. Miller have a brief window in which to push through their vision of Mr. Trump's economic nationalism.

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