Strictly speaking, non-citizens have no rights under the American Constitution when they're not on US soil. FISA 702 grants extensive access to collect foreign

Strictly speaking, non-citizens have no rights under the American Constitution when they're not on US soil. FISA 702 grants extensive access to collect foreign communications relating to terrorism. So from a legal standpoint, there isn't anything in the Constitution that prohibits gathering the communications of those in other nations, and it's actually specifically statutorily authorized. Also, to note quickly, this is the norm rather than the exception in Western and Western-style constitutions. The American Constitution comes up in this context more often simply because of our outsize presence on the world stage.