It does no such thing. In fact tuition for illegals enables even greater division and balkanization of the USA.
Good grief. It’s not FREE tuition, and it most certainly does help them integrate, if they hadn’t already. I suppose now you’ll have a fit that the US military hires and PAYS Mexicans to serve in our military? Oh, no!!! You have got to broaden your thinking in your small world. Things are not so black and white as you think they are.