Life is all right in America!
(If you are white in America!)

I agree that America is one of the most diverse countries on earth, but culture is not something that can be so easily exported to another country.  You are assuming that American culture treats all cultures equally and that it integrates those cultures into its own without fundamentally altering them.  And most of the restaurants based on foreign cuisine in this country don't even serve the food that those particular countries actually eat.

Almost no foods that we identify as Chinese food do they actually eat.  For one thing, they don't fry anything.  They don't even use silverware.  They eat a lot less meat than is in our Chinese food as well.  They eat things that most people here wouldn't even imagine putting into their mouths.

Most of the foods we identify as Mexican food are Tex-Mex food (which is not Mexican food, Mexicans eat donkey, chorizo, and all kinds of things most Americans would never touch).  Hell, they use tortillas like silverware.

Foreign films are generally unsuccesful here, whereas American films are very successful abroad.

You essentially get the "chain restaurant" version of whatever foreign culture is being imported when it finally reaches you as a consumer.

The vast majority of people in this country only speak one language, where the complete opposite is true for many other parts of the world.

The food examples you gave are a great example of American culture, that we commodify aspects of a different culture and neutralize those cultural aspects that we don't relate to and produce a hybrid product.  But its certainly not the same thing that came from that foreign culture.

America is not a microcosm of the rest of the world.  If it were, America would be much poorer, would have far more violent conflict, and would be far more socialist than it currently is.  Our government would not be anywhere near as respectful of human rights as it currently is.  Our population would be predominantly Asian and whites would be a minority around the same size as blacks and Latinos.  77% of this country identifies themselves as White. 

Hell, I am glad that America is not a microcosm of the rest of the world, as it would be a much more unstable place.

I've lived a little more than half of my life in the US, and the other half in Italy and Japan. So about 7 years overseas and 9 here.

From my experience, its different. Italy I barely remember, but they have an open culture. I remember going to topless beaches as a kid. I really want to go back now that Im grown lol.

Japan was amazing. But I had both worlds as I lived on a US Airforce base but experienced Japanese culture as well. Their food is absolutely the bes though. I really miss Yakisoba.

But the US is different depending on where you live as each state has its own pseudo identity. I love living in the South because of many reasons, but theres also racism (much to my surprise) and other negative aspects. Depends on which part/city you live in. The culture in Las Vegas is tremendously different than the culture in Tallahassee, let me assure you.

It has its ups and downs.  I'm sure I take-for-granted a lot of things people outside the US would enjoy or want.

I asked a woman in Kyoto how the sushi in America compared to the sushi in Japan. She'd had sushi all over Japan, and in San Francisco and Los Angeles. She said sushi is pretty much the same all around the world because real Japanese sushi chefs travel all over the world and open restaurants and spread the gospel of sushi-making. There's still crappy sushi everywhere too. But the good expensive sushi is the same all over the world. I can only say that about sushi though, because it's the only Japanese food that Americans and the rest of the world are so eager to import. I'm still looking for a place to get okonomiyaki in America. I heard they have it at a place in the Japantown in San Francisco. I gotta go czech it out when I have some money.

Akuma's right about Chinese food and Mexican food. I doubt I've ever had real Chinese food, but I've had real stuff in a couple places in Mexico and it was amazing, and way better than American tacos and burritos. I had quesadillas with shrimp and mango in them. I had an octopus tostada. And in Los Angeles I would eat at the taco trucks in Highland Park and eat tons of lengua constantly. Lengua is the best meat in the world. I can't find it where I am in Oakland though. Life is horrible now.

One time, I ate sushi filled with cream cheese. It was the worst fucking thing I've ever eaten in my life.

Where the hell was that?

Chinese buffet. I rarely ever eat sushi, and the ones I ate there certainly didn't give me a good impression. I'm not sure if I just hate sushi entirely or if the restaurant was poor quality. The rest of the food was good.

Well cream cheese is just a horrible and hilarious idea.  I mean, I'd try it, but only for the lulz.

If you're ever willing to try sushi again, salmon and tuna are the classics, or the basics.  Many sushi places compete by coming up with the wackiest shit, but real sushi is just a chunk of fish and a chunk of rice, and maybe some seaweed to hold them together.  Use a dash of soy sauce and a dash of wasabi.  You'll get some asshole snobs who think those are only for beginners, and they'll think they're cooler for graduating to the weirder shit.  But screw those chumps.  Salmon and tuna are always good.

Or try unagi.  It's the fresh water eel.  It's good, and comes with an awesome sauce.