Stephen Miller said Trump has ‘plenary authority’. What does that mean?

White House deputy chief of staff had an odd pause during a CNN interview when asked about the president's power to deploy national guard troops

An odd moment in a CNN interview with Stephen Miller, the White House deputy chief of staff, has been circulating on social media after Miller's distinct pause when discussing the plenary authority" of the president. A technical glitch - crossed wires from another broadcast in Miller's earpiece - caused him to stop talking before completing his thought, CNN said.

But the term plenary authority", has been taken as subtext for the broader ambitions of the Trump administration to assert legally-unassailable power over the use of the military and other functions of government.