Advise & Consent (1962)

Robert Leffingwell: I'm an egghead. I'm not only an egghead, I'm a premeditated egghead. I set out to become an egghead and at this moment I'm in full flower of eggheadedness, and I hope to spread the spores of egghead everywhere I go.

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Robert Leffingwell: Son, this is a Washington, D.C. kind of lie. It's when the other person knows you're lying, and also knows you *know* he knows.

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Although the character of The President (played by Franchot Tone) carries no role name, at one point in the script Munson (played by Walter Pidgeon) calls him "Russ".
Director Otto Preminger offered the role of a Southern senator to Martin Luther King Jr., believing that the casting could have a positive impact (despite the fact that there were no black senators at the time). King declined after serious consideration, as he felt playing the role could cause hostility and hurt the civil rights movement.
The blackmail attempt is based on the case of Wyoming Senator Lester C. Hunt, who was blackmailed by members of the Republican Party. Hunt was told by Sen. Styles Bridges that if he ran for re-election that November, the details of his son's arrest (for soliciting prostitution from a male undercover officer) would end up "in every mailbox in Wyoming". Hunt eventually agreed to step down, but eleven days later committed suicide in the Capitol.
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