EU has 28 states: Austria, Belgium, Bulgaria, Croatia, Republic of Cyprus, Czech Republic, Denmark, Estonia..
USA has 50 states: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware...
Absolutely not. For all its faults, the US "nation" is far more cohesive than the EU, or any other union of nation-states that I know of. People in New York might deride Alabama but that doesn't rise to the level of xenophobia you'll find in many EU countries, particularly... ahem... the ones on the right side of the map. Lack of common language complicates things in the EU however there is also the history of wars for most of Europe's civilized existence.
That's not to say there aren't issues in the US. But I'm quite certain that between the extremes of "let's go back to 1950s and put women back into the kitchen and brown people to the back of the bus" and "let's torch all police precincts and build a new society based on UBI and unicorn farts" there will be a solution found somewhere in the middle. Will everyone be happy? Probably not. Will it be motivated mostly by money? Fuck yeah. That's the American way. Works most of the time or at least works better than what anyone else managed to come up with.