According to BuzzFeed, a group of ethics scholars and lawyers filed a major lawsuit against Donald Trump today. The Citizens for Responsibility and Ethics in Washington (CREW) suit alleges that Trump’s violations of the Foreign Emoluments Clause “pose a grave threat to the United States and its citizens.” Some takeaways:

• The constitutional provision reads: No title of nobility shall be granted by the United States: and no person holding any office of profit or trust under them, shall, without the consent of the Congress, accept of any present, emolument, office, or title, of any kind whatever, from any king, prince, or foreign state.
• The lawsuit requests a declaratory judgment defining elements of the Foreign Emoluments Clause, and an injunction barring Trump from violating the clause.
• “We did not want to get to this point. It was our hope that President Trump would take the necessary steps to avoid violating the Constitution before he took office,” said CREW's Noah Bookbinder.
• The CREW suit argues “Consistent with the Framers’ intent, the definition of a ‘present’ or ‘Emolument’ under the Foreign Emoluments Clause also is properly interpreted in a broad manner, to cover anything of value, monetary or nonmonetary.”

The story was originally reported by The New York Times (along with reports of several other lawsuits). BuzzFeed News' story expands on the reporting.

Update: This story was updated to reflect that the lawsuit was filed Monday morning.