I know that wasn't your intention, but that response is essentially MAGA thinking - thinking that everyone else is dependant or subservient to the US (in that case, via NIST).
Other countries, and national groupings such as the EU, already have their own standards bodies. They're not "regulated" by NIST. I'd guess that BSI (the British Standards Institute) has probably had more historical impact globally that the US Bureau of Standards (now NIST).
The real benefit from having foreign scientists at NIST is one of alignment, something that is particularly anathema to the current US administration.