Mark Felt (2017)

You could say that after “We, the people,” the three most important words in American political history are: “Follow the money.” They were said by the anonymous insider who gave critical details about corruption in the Nixon White House to Bob Woodward and Carl Bernstein.
He was known only as Deep Throat, a nod to the popular porn movie starring Linda Lovelace that was released around the time that the two young Washington Post reporters, with his guidance, followed a trail that led them from a burglary at the Watergate office of the Democratic National Committee to the corruption that forced the first-ever resignation of a US president.
It is not a coincidence that this movie was made now and not before. Mark Felt, a career FBI man, identified himself as Deep Throat only after decades had passed and he was near death.  The movie reveals the depth of the reach the Nixon White House had outside the executive branch, which seems very modern indeed these days.