They show up at ERs, i.e., the most inefficient way of delivering healthcare. Hospitals are then mandated to provide care for "emergency" services. Hospitals are then reimbursed sometimes for this through Emergency Medicaid. Additionally, eleven glorious blue states provide free healthcare to low-income illegal aliens.
I wonder in Jim's World how the people of Jim think illegal aliens pay for childbirths? Do the people of Jim believe they pay the roughly $30,000 out of pocket? Do they all just give birth in the back of El Caminos? Do they buy health insurance directly from providers? What do the people of Jim imagine happens?