Why does NSEERS exist? If NSEERS and US-VISIT are linked to make sure going through one system checks the other system too for matches, then we need only one system, saves us money and bad reputation overseas.
If they are not linked, NSEERS would also be bad, since we could be missing a lot of positive matches. Either way, America does not need this unwelcoming attitude and bad reputation/publicity. One system that does not humiliate foreigners but is equally effective does everyone a big favor.