I don't know, claiming parts of other counties as their own on official maps seems pretty imperialist to me. I also don't know what your definition of totalitarian is if you believe the US is totalitarian. I've heard claims of authoritarianism before, but claims of totalitarianism make even less sense. It seems like an effort to render a word meaningless by misusing it.
America is imperialist, as is China, Russia, and every other major world power. It's just what large states tend to do. I suspect MLs view imperialism only through the lens of capitalism, when imperialism far predates capitalism. Capitalist imperialism is only one form of an empire projecting its power.
I don't know, I've met plenty of American tankies, anarchists, socialists, and communists. This is some real "reject the evidence of your eyes and ears" level shit. I can't twist reality into enough of a pretzel to make this viewpoint have any validity. It's laughable.
Most don't want to move. Immigrants die to get in because their homes were destroyed by global capitalism. Despite all the shitty things about the US, people wanting to leave isn't a big thing yet. I don't personally know of many prisons that people are dying to get into. America is more like a casino anyhow.
As far as communists not having power, I can't say it's surprising. ML communism has been an absolute failure, poisoned from early on. The only kind of ML state that has survived without totally embracing capitalism is Cuba, and that's depressingly thanks to the USA keeping them isolated. Besides, Cuba mostly swore fealty to Marxist-Leninism because of shared interests.
Communism is dead in the US because it's dead everywhere. With few exceptions, every so called "existing socialist state" has embraced capitalism and done more to reinforce classism, imperialism, and nationalism than eliminate these vices. Socialism is about getting rid of class differences, uniting the working class across the globe. Most of you self proclaimed "communists" are deluded cultists who make a mockery of the ideas that you claim to represent.
I'm not blinded by liberalism so much as I'm disillusioned with supposedly communist movements. I will never follow a movement that demands its followers reject reason and evidence in favor of dogma and genocide denial. If not following the divine unquestionable wisdom of Vladimir Lenin constitutes not being left wing, then the left deserves to fail.
Unfortunately for chuds like you, the left is bigger than your stupid fucking cult, and leftists will make the world a better place with or without your help. No matter how many communities you infiltrate and take over, leftists will just gather again elsewhere. This is because leftists are people who try to make the world a better place rather than falling into cynicism and tribalism. People don't need Marx or Lenin to know how things suck or how things can be better. Your hero worship is less than worthless.
Second of all, nine-dash line and neo-colonialism in Asia, Africa, South America and Europe says very differently. As does the Han supremacism that Xi surrepitously perpetuates.
China is imperialist to a degree, but they're certainly not invading countries all over the place like the US. People here like to claim that bringing up the US is whataboutism even though the US is the prime example of imperialism currently and the US likes to preemptively point at China and Russia to distract from their own actions.