All the President's Men is a 1976 American political thriller film about the Watergate scandal, which brought down the presidency of Richard M. Nixon. Directed by Alan J. Pakula with a screenplay by William Goldman, it is based on the 1974 non-fiction book of the same name by Carl Bernstein and Bob Woodward, the two journalists investigating the Watergate scandal for The Washington Post. The film stars Robert Redford and Dustin Hoffman as Woodward and Bernstein, respectively; it was produced by Walter Coblenz for Redford's Wildwood Enterprises.

References:
https://en.wikipedia.org/wiki/All_the_President%27s_Men_(film)