To add to what has already been said in this thread, Snowden also revealed the NSA didn’t just spy on US citizens but also spied on other countries, in particular they had very strong surveillance on Brazil, I remember it created some uproar at the time in the country(I am from Brazil), but I don’t know what was done about it. Anyway it’s reasonable to expect that the NSA can have access to your info even if you’re not American.