theoretically you can do that if you want. if you want to identify as alien space cruiser, go ahead. it's really loving weird and everyone will probably laugh but if you, as a citizen of the united states, feel that's what you want to identify as, then, uhhh... you can. our laws aren't made to judge people, they're made to decide what is best objectively measured as right or wrong. identifying as cheese isn't right or wrong, but using your cheese identification status to cut your skin with a cheese grader is objectively wrong, as it is impairing your behavioral abilities
i don't define gender identity and love and personality and all those other things. if you want to read up on it, read the world health organization's page on gender and maybe you'll find some answers, maybe enlighten yourself or discover things you've misunderstood