On February 20, 1917 British intelligence revealed to the US ambassador to Great Britain the contents of the Zimmerman telegram, go here to read about the telegram. The Brits disclosed to the Americans the code breaking that they engaged in to read the message. When the telegram was disclosed to the public, in order to protect British code breaking, it was alleged that British agents had stolen a copy of the telegram in Mexico. The contents of the message was so fantastic that many Americans thought it was likely a fake produced by the British, which was the line taken by the mighty Hearst empire. President Wilson was faced with a dilemma as to whether to disclose that the British had decoded the message, and risk the ability of the British to read German messages, or to let the erroneous charges that the telegram was a fake remain unanswered. His dilemma would be shortly resolved by an unlikely source.