[buaya]

"I know I've read this script before ......"

Democrat Presidents all think alike, don't they?

The British played on our concerns about protecting our Southern flank while entangled in the war in Europe. The "Zimmerman Note," purportedly a secret German proposal to help Mexico recover the Southwest in the event of a war with America, is generally regarded as a forgery that was produced by the British.

[janus]

regarded as a forgery that was produced by the British

Similar to Bismarck's telegram in the Franco-Prussian war

[Doctor Stochastic]

I would not say "generally regarded" as a forgery. There was a new book on the affair recently (about 5 years ago) and it regarded the telegram as authentic. So does Kahn's "The Codebreakers." Your post is the first reference I've heard to it's being a forgery. (You might be right but I haven't seen any corroborating evidence.)