U.S. President-elect Donald Trump on Monday named his son-in-law, Jared Kushner, as senior advisor to the president.

"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.

Kushner said, "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, who is about to turn 36, is married to Ivanka Trump. He has played a considerable role during Donald Trump's election campaign and the assembling of his administration team.

Kushner is said to be close to Stephen Bannon, Trump's top strategist and senior counselor, as the two men had similar political views.

The appointment may run counter to an anti-nepotism law banning officials from appointing their relatives to public offices.

Former President Bill Clinton once tasked his wife Hillary Clinton to head up health reform efforts, which suggested that the law may not cover the White House staffing.

Kushner will need to divest his assets to avoid a conflict of interest, and may need to forego salary for his new position.

According to media reports on Monday, Ivanka, who has also played a role in the transition period, is not expected to take up any position in the incoming administration.