1. The Trump administration and Congress are in a standoff over a potentially explosive complaint by a whistle-blower said to involve President Trump and at least one conversation with a foreign leader.

The inspector general for American spy agencies told lawmakers during a private briefing that the complaint involves multiple events, two officials familiar with the briefing told The Times. The acting director of national intelligence, Joseph Maguire, has refused to turn the complaint over to Congress, as is generally required by law.