The US allows wild lions to be imported. It takes 6-12 months to complete. The outfit must have a robust anti poaching program. Help with overall local conservation and also the local communities. If this can be demonstrated to authorities they will allow you to import from that area.
In other words the hunting must give back much more value than the animal killed. Which translates to hundreds of thousands of dollars from the PH efforts and the money the hunter pays for government hunting permits. Also employing locals and donating meat. Digging wells, building schools.
It’s like an elk outfitter being required to rebuild the nearby town to kill several elk every year. Pay thousands in permits per hunter. Donate the meat etc etc.