A lot of the countries where this stuff happens don't have strong enough governments to stop it. It's easy to become accustomed to powerful western governments

A lot of the countries where this stuff happens don't have strong enough governments to stop it. It's easy to become accustomed to powerful western governments if you've grown up in one, but not good to expect the same level of law enforcement in the global south. That's even when those governments care about stopping the problem - it's not something you can just will away. Eliminating trade in these countries just makes life worse for the rest of the citizens there and doesn't make the human trafficking problem go away. Beyond that... human trafficking happens in USA. A lot around super bowl time.