I honestly think that America is not for everyone's taste. It wasn't in the 18th century and it certainly is not now.
Take England as an example. For a long, long time Brits could choose where to go in this world. Some chose Canada, some chose America. Some went elsewhere in the Empire and then the Commonwealth. Even with Canadians, you see a bunch of folks that like the land of North America, but prefer a different political system.
This isn't a rag on any of them or any of us. It's kind of like pepperoni on your pizza. Some folks can't stand it. Others ask for a double helping.
Y'all know me and my quirky views on being a German American instead of an English American. My grandfather's choice to be an American pre-dates his emigration after WWI. Grandpa was an American all his life. He was the second youngest born. His father had a title, but that only bought him a paltry sinecure. Grandpa knew his fortunes were going to be elsewhere. He wanted to be free. He did not want limits placed on his life, solely based on his last name. He didn't want to be a rope maker like his father.
You can blame Ben Franklin for my Grandpa's urge to become an American. Back during the Revolution, Ben printed up some propaganda flyers in German promising land, livestock and farm implements to any Hessian mercenary that defected. One of my ancestors took him up on it. I found him on the Hessian roles as one of the ones that didn't come back. That side of the family is now up around Toledo. They kept sending word back home of what it was like here in the States. Grandpa's mother was a widow and in her old age when she left for America, just to see what it was like. We found her grave outside of Batavia, Ohio. No one knew she was there. Dad certainly didn't. America was just this wonderful place that you had to go see.
America is not for everyone:
Grandpa is the young boy on the left. He came here in 1923 and was a millionaire by 1929. The young man in uniform died in WWI. The youngest never left Marburg. The older son on the left flipped off Hitler and had to go hide in the Black Forest for a decade. The two sisters on the right emigrated to America as soon as they could and raised families here.