Well, Ameri-wank would indicate that it's the wanking of America...we want OTL Liberalized America to 'cum' about very fast. So, I'm thinking it uses an official two languages (maybe at the state-level), and then you said something about how not all Hispanics are the same.
Sure, I get that, and I'm going to say that its not all Hispanics, it's still just a couple parcels of land from Mexico. At first it's Mexico anyways. The other states can fall into place later, or not officially at all. But the Population isn't going to be the happiest about suddenly being pushed aside, and it's kind of dumb to force them to learn the language when they're already the ones working there (writing birth certificates, death certificates, marriage licences, deeds to lands, contracts, etc). Maybe English is introduced, but Spanish will become more widespread in other States-of-Unity as well, probably faster since the English states have all the $$$.
And by Cuba, I meant Cuba. The US Militarily interfering hasn't changed anything from OTL and will probably get rougher and rougher until something breaks even earlier. And what I mean by 'Breaks' earlier is that America has to stick around after the military action and clean it's mess. Panama rings a bell, so does Nicaragua, that failed Cuban invasion (what was it? the Bay of...the Bay of...Bacon?

heheh) has a lovely ring to it. The fact is that the United States won't stop messing about. It's not exactly pretty, but we'll try an think realistically (people make mistakes that end up costing the entire nation some valuable army time in some random nation). 'Sensibly' doesn't enter into American interventionism, at any date.
A company called United Fruit fucked over a few countries in Central America if I recall. The United States of America is bigger than a single fruit company, even in 1776. Now, they've got motive, certainly, that Manifest Destiny thing doesn't like to be kept waiting (see 1812). It likes action, brutal action in the jungle with machetes and gun. It requires the actions with machetes and guns for most of the interference that doesn't end up with an increase in
official American Territory.
As for Canada, I'm not entering into that territory without Zyzzvya giving me another history lesson, but I'm sure that if America had a lot more population in 1812 we'd have been invaded and beaten like a masochistic Montreal whore. Even the British would probably run to save the Caribbean more than Canada, I know I would. Canada... Caribbean... Canada... Caribbean... Not a hard choice, I like the sun as much as most geeks.
And if you want to talk about Butterflies who says that a larger USA doesn't become the larger CSA keeping slavery until 1920? Well, I do, since it's an Ameriwank, not a Americastrate. The NAU will probably get involved in any Anti-communist Cold War just as America did, unless it becomes the first communist nation, but since we're still holding Florida in our collective hands and rubbing, let's continue with the Capitalist notion.
I mean, as an anarchist, I'd wank a Socialist United States all day, I'd be happy with this TL is we somehow worked Universal Health Care into it by 1989.
Anyways, I don't think you see the point of 'Wank'. It's not to make them powerful, it's to bring them to the best conclusion possible. A modest wank would involve some kind of liberal laws, and I'm thinking their big controversies in the ATL would be Gay Marriage, Border security in lower OTL Mexico (instead of Higher OTL Mexico like in OTL), Celebrities and the President's supposed drug habits (Or religion).
Wank wank wank wank wank: Liberal America.
I mean, Mexicans have a law in OTL that requires nap-time. How much more liberal can you get?