It’s better to look at this as a humanitarian crisis, and call out the Central Americans on the carpet and ask them why their people feel it necessary to flee to the US?
What are they doing to them?
Then ask the UN what they are going to do to assist Mexico on repatriating them to their countries of origin.
That is the ONLY way this resolves itself in a way that doesn’t end up with a huge public mess at the border two days before midterms.