Check the referenced 1182(a)(3) [1] regarding excluded aliens. The most direct would be 1182(a)(3)(A)(ii) which prohibits the assistance of any alien whom there

Check the referenced 1182(a)(3) [1] regarding excluded aliens. The most direct would be 1182(a)(3)(A)(ii) which prohibits the assistance of any alien whom there is sufficient reason to believe plans to engage in any unlawful activity. Unlawful entry/residence is, of course, unlawful activity. The fact that much of the caravan had already done that, by force of numbers, at the Mexico-Guatemala border while chanting things such as "One way or another, we will pass!" offers more than "reasonable ground to believe" such actions were also planned for the US and US border. The reason the legalese is so obtuse is because it also encompasses aiding or assisting in the legal entry of an alien for whom there is "reasonable ground to believe" will engage in unlawful activity. [1] - https://www.law.cornell.edu/uscode/text/8/1182 https://www.law.cornell.edu/uscode/text/8/1182