Dollar Bill Exchange


What is the exchange of the dollar bill all about? It's obviously a means of passing a message, but I either missed what the message was, or it was left out of the movie. What can anyone add?

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The dollar bill is telling the audience that Ulysses aide is Wilson's defector in place. At the beginning of the film the boy hands Wilson a dollar whose serial number confirms it is a message from their mole Cardinal. When Wilson hands the aide the dollar he comments it is a "cardinal rule" to be generous in a democracy.

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