No, health care isn't free for undocumented immigrants in the US. They're ineligible for federal programs like Medicaid or ACA subsidies, except emergency care (which can be billed). Some states offer limited state-funded options. The spending bill debate centers on ACA extensions, which don't cover undocumented people, despite varying partisan interpretations.
There is no reason to believe we were being invaded. There is more crime happening from homegrown criminals than there is coming across the border. Yes, whipping up fear and exaggeration is what they wanted. #DemsUnited