Jim Zarroli

Updated at 12 p.m. ET

A team of ethics experts and legal scholars filed a lawsuit in federal court Monday morning that says President Trump's overseas businesses violate the Constitution's Emoluments Clause, which bars presidents from taking money from foreign governments.

President-elect Donald Trump takes office on Friday having largely failed to address concerns about the many conflicts of interest posed by his business interests.

Although Trump has settled a few of the outstanding legal and regulatory disputes hanging over him, he remains in the unusual position of presiding over countless policy decisions that will affect his own businesses.

These days, plenty of consulting firms make money peddling advice on cybersecurity. Only one is run by a man designated special adviser to the president of the United States.

Earlier this month, President-elect Donald Trump named former New York City Mayor Rudolph Giuliani, who heads a cybersecurity practice at the Miami-based law firm Greenberg-Traurig, as his chief adviser on cybersecurity issues.

President-elect Donald Trump has suggested he may give his daughter and son-in-law some roles in his new administration, but a 1967 anti-nepotism law makes doing so a lot more complicated.

The law bars presidents from hiring relatives to Cabinet or agency jobs, although a federal judge has ruled that it doesn't apply to White House staff jobs.

Some prominent conservatives have signed on to a letter warning President-elect Donald Trump that he needs to sell off his businesses to address his many conflicts of interest.

"Respectfully, you cannot serve the country as president and also own a world-wide business enterprise, without seriously damaging the presidency," says a letter sent Monday by a bipartisan group of politicians, ethics advocates and academics.

President-elect Donald Trump insists he can do all the business deals he wants while serving in the White House, but a 2012 law barring insider trading by government officials could make doing so a lot more complicated.

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