I've been checking out remote USA internships to apply to. Some specifically mention that even though this is a remote internship, they are not hiring candidates from outside the US. But there are some that don't specifically mention this, and I assume that this means they will offer the remote internships to people residing outside of the USA, but then I read this line:
"Must possess unrestricted work authorization."
What exactly does this mean? Because at least 5 internship descriptions that I want to apply to have this same requirement.