US Secretary of State Mike Pompeo praised President Donald Trump's foreign policy record in a Republican National Convention speech that Democrats criticised as a breach of protocol and perhaps the law.
"The Trump administration and Secretary Pompeo have shown a gross disregard not only of basic ethics, but also a blatant willingness to violate federal law for political gain," Joaquin Castro, head of the House Foreign Affairs Committee's oversight subcommittee, said in a statement. In his letter to Mr Biegun, Mr Castro wrote that it was "readily apparent" from documents in his panel's possession that Mr Pompeo's appearance may violate the Hatch Act, federal regulations implementing that law and federal rules.
Unlike often aggressive speeches by two of Mr Trump's children from previous marriages, Eric and Tiffany, the first lady brought a soft touch to her keynote address from the White House's Rose Garden. "I call on the citizens of this country to take a moment, pause, and look at things from all perspectives," she said. "We still have so much to learn from one another."