American President-elect Donald Trumphas appointed his son-in-law Jared Kushnerto a high-level position in his administration.Trump asked Kushner to serve as a senior adviser to the president.Unlike cabinet positions, the job of adviserdoes not require approval of the United States Senate.Six members of Congress are questioning Kushner's appointment.All six belong to the Democratic Party.The lawmakers wrote a letter to Attorney General Loretta Lynchand the U.S. Office of Government Ethics.They noted that a 1967 law bars a public officialfrom appointing a family member to the same agency in which the official serves.They also asked the Justice Department and ethics officialsto investigate possible conflicts of interest.Jared Kushner is married to Donald Trump's daughter Ivanka.Lawyer Jamie Gorelick is advising Kushner on legal issues.She said the law does not affect the presidentbecause the White House does not fall under the definition of an agency.The lawyer also said that Kushner plans to sell all his foreign investmentsand his financial interests in an investment company and an office building in New York.He also will resign as head of Kushner Companiesand as the publisher of The New York Observer newspaperbefore working for the Trump administration.The six lawmakers questioned Gorelick's statementthat Kushner would remove himself from decisionsinvolving his remaining financial interests after leaving his companies.They said he would still have investmentsthat could be affected by government policy that he influences.Aides to Donald Trump said that, as a presidential adviser,Kushner will work mainly on issues involving trade and the Middle East.They said he will work closely with Chief of Staff Reince Priebusand Chief Strategist Stephen Bannon.Legal experts are offering differing opinionsabout whether the appointment of Trump's son-in-law violates the 50-year-old law.Kathleen Clark is a law professor at Washington University in Saint Louis, Missouri.She said her understanding of the law is that it does affect the president."Congress didn't in this law carve out an exception for the White House,"Clark told the Associated Press.She said it governs the presidency, the legislature,the courts and the District of Columbia government.But Indiana University professor Gerald Maglioccasaid he did not think the law could be usedto restrict the president's team without risking constitutional problems."It's hard to see why Congress has the authorityto limit presidential staff members," he said.