No one who worked for the committee, including its chairman, Thomas Barrack, has been accused of wrongdoing .

Background: The investigation grew from the one into Michael Cohen, President Trump’s former personal lawyer. Mr. Cohen’s case was referred to federal prosecutors in Manhattan by the office of the special counsel, Robert Mueller.

Wall looms over State of the Union address

President Trump is expected to focus on immigration in tonight’s speech, which was postponed by the partial government shutdown, and he will probably reiterate his demand for a wall on the southern border. He is not expected to declare a national emergency, a fallback plan that would circumvent Congress but that Republicans have warned could divide the party.

Mr. Trump is also expected to announce a plan to stop transmission of H.I.V. by 2030. Here’s what to watch for in the speech, which begins at 9 p.m. Eastern. We’ll have live coverage and analysis.