President-elect Donald J. Trump announced Monday that Jared Kushner will serve as senior advisor to the president.

“It is an honor to serve our country,” Kushner said in a statement. “I am energized by the shared passion of the President-elect and the American people and I am humbled by the opportunity to join this very talented team.”

Kushner, a real estate developer, is married to Ivanka Trump and has been considered a close adviser to Trump during his campaign and transition.

“Jared has been a tremendous asset and trusted advisor throughout the campaign and transition and I am proud to have him in a key leadership role in my administration,” Trump said in a statement. “He has been incredibly successful, in both business and now politics. He will be an invaluable member of my team as I set and execute an ambitious agenda, putting the American people first.”

In a sign that he was planning to take a position in the new administration, Kushner has been taking steps to distance himself from his sprawling New York real estate business.

And on Monday, Joseph Meyer, the Chairman and CEO of Observer Media — where Kushner had served as publisher for years and in which he held an ownership stake — sent a memo to Observer staff to announce Kushner's exit from the company.

"As you've certainly been reading," the memo begins, "our publisher Jared Kushner has taken an official role in the incoming administration.

"I will be taking over as Observer publisher and Jared will no longer have an ownership stake in the Observer. He has also resigned from our editorial board and will play no role in the publication's affairs going forward," Meyer's statement reads.

Beyond the Observer, Kushner must clear a series of hurdles before he takes any post in Washington. He will need to argue that a federal anti-nepotism law that bar officials from appointing relatives to government positions does not apply to him as well as eliminate potential conflicts of interest between his family's multi-billion dollar real estate empire and his government duties.

Kushner, who often has the last word with the president-elect before a major decision is made, has explored stepping away from his role as CEO of the real estate business and has consulted with federal officials about resolving potential conflicts, according to his lawyer.

"Mr. Kushner is committed to complying with federal ethics laws and we have been consulting with the Office of Government Ethics regarding the steps he would take," said Jamie Gorelick, a partner at the law firm of WilmerHale, in a statement. "Although plans are not finalized, Mr. Kushner would resign from his position at Kushner Companies and divest substantial assets in accordance with federal guidelines."

Gorelick said that Kushner "would recuse from particular matters that would have a direct and predictable effect on his remaining financial interests. He would also abide by federal rules requiring impartiality in particular matters involving specific parties."

Kushner's challenges highlight a notable pattern of the incoming administration. While some government officials will be forced to divest and rearrange their financial portfolios to comply with federal ethics laws, their boss will not be required to do the same. As president, Trump is exempt from laws aimed at ensuring federal employees' personal financial interests do not influence their decisions. The president-elect has said he intends to distance himself from his own international real estate business, but he has suggested he intends to break from precedent by retaining a stake in the company.

Trump is expected to announce some plans for his business during a Wednesday news conference.

The Kushner Companies is a major real estate investor in New York and elsewhere and participated in roughly $7 billion in acquisitions in the last decade. If Kushner joined the administration, he would divest some of business interests, including his stake in a major Fifth Avenue skyscraper, according to his spokeswoman Risa Heller. Kushner has spent months negotiating a redevelopment of that building with Anbang Insurance Group, a real estate giant with close ties to the Chinese government, The New York Times reported on Saturday.

In addition to working through that nest of potential conflicts, Kushner has also been consulting lawyers about a federal anti-nepotism law that bars officials from appointing relatives to government positions. The 1967 law, which was seen as a response to President John Kennedy selecting his brother Robert Kennedy as attorney general, would also be a potential obstacle for Ivanka Trump, who is also expected to have a role in her father's White House.

Some Trump advisers have argued that the law does not apply to the White House, only Cabinet agencies.

"The anti-nepotism law apparently has an exception if you want to work in the West Wing, because the president is able to appoint his own staff," Trump adviser Kellyanne Conway said in December. "The president does have discretion to choose a staff of his liking."

As precedent, some Trump backers have pointed to the woman the president-elect defeated in last year's bitter White House race: Hillary Clinton. President Bill Clinton's decision to put his wife in charge of his health care reform efforts was challenged in court, but two federal appeals judges said the anti-nepotism law did not appear to cover White House staff appointments.

But if Trump finds White House roles for his daughter and son-in-law, he's walking an ethical tightrope that could set a precedent for future presidents, said Norm Eisen, who served as President Barack Obama's chief ethics counsellor.

For example, if the first lady's office essentially becomes the first family's office, "it will be like institutionalizing nepotism," he said. "And I think it could be politically perilous." At the least, Eisen said, Trump should ensure the couple is categorized as regular government employees who must routinely publicly file disclosures about their business ties and investments.

In the campaign's stretch, Kushner was a constant presence at his father-in-law's side. He has acted as a gatekeeper to Trump in the transition and has sat in on scores of high-level meetings, including Cabinet interviews.

If he takes a government post, his presence in the West Wing would add another power centre in a White House that is shaping up to be top heavy. Incoming chief of staff Reince Priebus and senior adviser Steve Bannon were announced as "equals." Conway, who will serve as counsellor to the president, is also likely to have autonomy and direct access to Trump.

Ivanka Trump has taken steps to leave her role at the Trump Organization, which the president-elect said would be run by company executives and his two adult sons, Don Jr. and Eric.

In a brief interview Friday with The Associated Press, Trump said he has a "very simple solution" for addressing his business ties, but would not detail the plans. He also suggested the matter was not important to Americans.

"When I won, everybody knew that I had a very big business and a very successful business," he said. "The voters knew that."