Other threads have said that this was actually George HW Bush policy.
It originated under Slick Willie. Close, but no cigar.
“Regulation 90-114 regulates firearms on military bases and was implemented by President Clinton in 1993.”
The other threads are wrong.
CC
It was both. AR 190-14 (link) (pdf) was issued under Clinton in March 1993. But, it was implementing DoD directive 5210.16 (link) (pdf), which was issued under Bush in February 1992.