Most of them. They are arguably in a better situation than most of them have ever experianced. Food, water, shelter, clothes, and a path to freedom are a great start.
If you want open boarders how about you start by taking the door off your house and turning it into a shelter? Who needs a vetting process, let everyone in.
I'm looking forward to you donating your time to personally experiance life on the boarder and getting a first hand look. It's easy to rant and rave when you have no clue what's going on.