The deputy director of the FBI, Andrew McCabe, is expected to resign within the next few months. McCabe was the right-hand man of former FBI Director James Comey, and he briefly ran the agency after President Trump fired Comey. McCabe has now faced months of escalating pressure and attacks from Republican lawmakers. Unnamed sources have told The Washington Post that McCabe plans to retire as soon as he’s eligible for full pension benefits. Over the weekend, President Trump took to Twitter to repeatedly criticize McCabe, in a tweetstorm that experts say could constitute witness intimidation. McCabe may be called as a witness in special counsel Robert Mueller’s ongoing investigation into whether the Trump campaign colluded with Russia and whether Trump committed obstruction of justice by firing former FBI Director James Comey. Richard Painter, who served as chief White House ethics lawyer for President George W. Bush, tweeted, “Using Twitter on Christmas Eve to intimidate a witness (McCabe) in a criminal investigation is not a very Christian way to celebrate the holiday. But it does make Mr. Mueller’s job easier and that’s a nice thing to do. Merry Christmas!”