But on Thursday, Trump's attempt to act with impunity showed a crack as Matt Gaetz, his choice for attorney general, withdrew from consideration.

Trump had named Gaetz, a Florida congressman, to be the country's top law enforcement official even though he was widely disliked by his colleagues, has little legal experience and was accused of having sex with an underage girl, an allegation he denied.

After being plagued by investigations during his first presidency, Trump wanted a devoted ally in charge of the Justice Department during his second.

However, it was never obvious that Gaetz could win enough support from lawmakers to get confirmed as attorney general. Trump chose for a replacement Pam Bondi, a former Florida attorney general who defended him during his first impeachment trial and supported his false claims of voter fraud.

Now the question is whether Gaetz was uniquely unpalatable, or if Trump's other picks might exceed his party's willingness to overlook concerns that would have sunk nominees in a prior political era.

The next test will likely be Pete Hegseth, who Trump wants to lead the Pentagon despite an allegation of sexual assault that he's denied. So far, Republicans are rallying around Hegseth, an Army veteran and former Fox News host.

Sen. Thom Tillis, a North Carolina Republican who serves on the Senate Judiciary Committee, said the controversy over Gaetz would have little bearing on Trump's other choices. He said they would be considered “one at a time.”

Sen. Richard Blumenthal, a Connecticut Democrat, suggested otherwise, claiming “the dominoes are falling.”

“The drip drip of evidence and truth is going to eventually doom some others,” he said.

Trump's election victory was a sign that there may not be many red lines left in American politics. He won the presidential race despite authoritarian, racist and misogynist rhetoric, not to mention years of lies about election fraud and his role in sparking the January 6, 2021, attack on the US Capitol. He was also criminally convicted of falsifying business records to pay hush money, and he was found liable for sexual abuse in a civil case.

Empowered by voters who looked past his misconduct and saw him as a powerful agent of change, Trump has shown no deference to Washington norms while working to fill his second administration.

The transition team hasn't pursued federal background checks for Trump's personnel choices. While some of his selections have extensive experience in the areas they've been chosen to lead, others are personal friends and Fox News personalities who have impressed and flattered Trump over the years.

Several have faced allegations involving sexual misconduct.

Hegseth is facing the most scrutiny after Gaetz. Once Trump announced Hegseth as his nominee for Pentagon chief, allegations emerged that he sexually assaulted a woman in California in 2017.

Trump's choice for secretary of health and human Services, Robert F. Kennedy Jr., has faced allegations of misconduct too. A woman who babysat for him and his second wife told Vanity Fair magazine that Kennedy groped her in the late 1990s, when she was 23.

That isn't the only hurdle for Kennedy; he's spent years spreading misinformation and conspiracy theories about vaccines, raising fears about making him a top health official in the new administration.

Linda McMahon, chosen by Trump to be education secretary, is fighting a lawsuit connected to her former company, World Wrestling Entertainment. She's accused of knowingly enabling sexual exploitation of children by an employee as early as the 1980s, and she denies the allegations.

Tulsi Gabbard is another person who could face a difficult confirmation battle, but for very different reasons. The former Democratic representative from Hawaii has been a vocal Trump ally, and he chose her to be national intelligence director. But there's grave concern by lawmakers and national security officials over Gabbard's history of echoing Russian propaganda. Critics said she would endanger relationships with US allies.

Gaetz was investigated by federal law enforcement for sex trafficking, but the case was closed without charges and Republicans have blocked the release of a related report from the House Ethics Committee.

However, some allegations leaked out, including that Gaetz paid women for sex. One of the women testified to the committee that she saw Gaetz having sex with a 17-year-old girl, according to a lawyer for the woman.

As Gaetz met with senators this week, it became clear that he would face stubborn resistance from lawmakers who were concerned about his behaviour and believed he was unqualified to run the Justice Department.

“While the momentum was strong, it is clear that my confirmation was unfairly becoming a distraction,” Gaetz wrote on social media when announcing his withdrawal.

Trump thanked Gaetz in a post on Truth Social, his social media website, without addressing the substance of the allegations against him.

“He was doing very well but, at the same time, did not want to be a distraction for the Administration, for which he has much respect,” Trump wrote.