But the right to free speech isn't impacted. It's "right of entry/movement" that is impacted, and that along with a few others (voting) isn't extended to non-c

But the right to free speech isn't impacted. It's "right of entry/movement" that is impacted, and that along with a few others (voting) isn't extended to non-citizens at all. While the United States is certainly big enough to ignore a few insults, some derogatory statements might imply a willingness to do the country or its people harm.