Why are these people carrying bags that say US AID? I looked them up and here is just a small bit but who activated them in Mexico for the caravan? I did find where it says they provide a number of additional reports to CONGRESS on performance.
https://www.usaid.gov/
https://ussanews.com/News1/2018/10/24/photos-usaid-bags-carried-by-caravan-of-illegals-us-taxpayers-on-the-hook/