The as-yet-unstoppable force of the Trump presidency and the as-yet-immovable object of Special Counsel Robert Mueller’s Russia investigation came a little closer to each other Tuesday night. A meeting between Trump and Mueller has long loomed as a potential inflection point for the investigation, and the Washington Post reports that Mueller brought up the possibility of subpoenaing the president to testify before a grand jury during a meeting with his legal team in March. Trump responded Wednesday morning by continuing to criticize the investigation, tweeting that it is a "setup & trap," echoing language used in a Fox News segment that aired Tuesday night.