absolutely immune from being compelled by congress to testify. absolute immunity is not a thing, she writes, at all. presidents are not kings, she adds. so it's a very busy night. there is also new reporting about acting white house chief of staff mick mulvaney's role in the ukraine affair. that and a subpoena linking rudy giuliani to a new and broad federal investigation of his associates and apparently now his company. plus what the lawyer for one of those associates says that could implicate congressman devin nunes, top republican on the intelligence committee, and universities y r -- and the president fires his navy secretary, and the secretary fires back. we begin with the court ruling and cnn's jim acosta live for us at the white house. what has the white house reaction been so far? >> john, this ruling applies to the former white house counsel don mcgahn, but it might as well apply to the acting chief of staff mick mulvaney. it might as well apply to the