But those rules do not apply to the president and vice president, the only executive branch officials who are exempt from a criminal statute and a separate ethics regulation that govern conflicts of interest.

That exemption is the reason President Trump could legally play a role in the selection of the Trump National Doral resort near Miami as the site of next year’s summit meeting of the Group of 7. If anyone in the executive branch other than Mr. Trump or Vice President Mike Pence tried the same thing, they would likely have been blocked by government lawyers, faced an ethics investigation and perhaps become the subject of a criminal inquiry, federal ethics lawyers from both parties said Friday…

Besides this conflict-of-interest law, picking the 643-room Doral resort near Miami for an event that will generate hotel room reservations and other related sales worth millions of dollars raises questions about whether other constraints might apply to the situation, the legal experts said. Those include federal competitive bidding requirements and provisions in the Constitution that ban even the president from taking certain kinds of payments from foreign governments and the federal government.