Here's a few points.

Illegals are allowed in order to create a new "Dependent Class" of the Welfare State. Essentially "Professional Democrat Voters" Another aspect of Cloward-Piven ideology.

Illegals don't contribute, but cheat the tax system as well. My cousin's wife prepared taxes for them. They always claimed enough dependents to receive the Earned Income Tax Credit, claiming nonexistent children and pets as dependents. A full audit of each is in order, those found to have committed tax fraud should be immediately deported.

If Democrats thought they would eventually become Republicans they'd be advocating machine-gunning them at the border.

I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.