The US Constitution and case law makes no distinction between protections granted to US citizens and foreigners. All are treated equally under the law, and thusly "enjoy" the same "protections."
However, case law has determined that such protections are not granted outside of the US's borders. Thus, an American citizen and a foreigner have equal protection (again, in theory) when inside of US borders - and both are equally unprotected when outside of US borders (it's a bit more complex regarding the 'outside of US borders' part, but that's the general gist).
The US Constitution and case law makes no distinction between protections granted to US citizens and foreigners. All are treated equally under the law, and thusly "enjoy" the same "protections."
However, case law has determined that such protections are not granted outside of the US's borders. Thus, an American citizen and a foreigner have equal protection (again, in theory) when inside of US borders - and both are equally unprotected when outside of US borders (it's a bit more complex regarding the 'outside of US borders' part, but that's the general gist).