AH Challenge: US Controls all of Canada and Mexico

With a POD after 1900, create a plausible timeline which will result in Canada and Mexico being incorporated into the US by 2010.
 
1939- World War II begins. For whatever reason, the Germans are less successful. The war in Europe ends in late '44 with Russian forces occupying Berlin, Frankfurt, and northern Italy.

The Reds consolidate their holdings, annexing territories into the Union. They even acquire large tracts of China during their civil war. The West sees that their only hope is NATO-Plus. NATO forms a sort of EU-like superfederation, which includes the US, UK, France, Canada, Mexico, and a few other countries. Slowly, the countries become closer and closer in relations, and after a while, federalize completely.



Or, have the US join the Central Powers in a Central Powers Super Victory timeline, and have the pancho Villa attacks "traced" back to the Mexican government.
 
With a POD after 1900, create a plausible timeline which will result in Canada and Mexico being incorporated into the US by 2010.

The only possible scenarios involve either a complete Soviet or Nazi takeover of North America or the complete breakdown of the Mexican and Canadian governments, military command structures and police agencies (but not of the US's). Therefore, I don't believe that there is a plausable post 1900 POD for this.
 
The US joining the central powers is a very plausible TL. That would get Canada out of the way. I could see Britain and France trying to get Mexico to open a 2nd front to relive the pressure on Canada.
Just have them find a Zimmerman esque telegraph to Mexico.

That I think is the most plausible way for a united NA.

Also you could have a 2nd wave of manifest destiny hit the people around 1900 or so.
 
Like this?

(Lame, I know.)

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