Why are steel leg-hold traps still allowed as a way for hunters to catch animals?

I just watched a video that an organization posted to my Facebook. It was sickening. It was about steel leg-hold traps that hunters use. It showed foxes, raccoons, and other animals caught in traps. Then this hunter would show up, the animal would be frantic, in pain, jumping around in a panic, with leg stuck, and the hunter would calmly take something that choked the animal. In other scenes the hunter would step on the windpipe or body of the fox to kill it. It was really sickening. I can’t imagine an animal being stuck in the cold, in terrible pain, for days until the hunter returned. It seemed like when the animal saw the hunter arrive, it knew that it was doomed, because the animal would become frantic.

The fur would not be usable since there was blood all over it and sometimes the animal chews off their foot to get out of the trap.

Why is this type of barbaric hunting still legal?