"The Pokémon TCG U.S. National Championships is open to legal residents of the U.S. only. Residency in this case is defined as a person who legally resides in the United States or one of its territories, not necessarily a U.S. citizen"
If I am a legal resident in the U.S. starting in May, I'm sure I'd be allowed to play their Nationals, as long as I have the proof (working/student visa or whatever and some form of address proof)?
Otherwise can I not play in a Nationals only because I moved to a new country in March and their Nationals is in July?
I'm probably going to be in a situation like this next year, moving to Brazil or Argentina in March and their Nationals are in late May/early June I believe.