That's exactly my point. They ARE the welfare state because the "Bronze Spaniard" government suppresses them and views them with prejudice and contempt. Obrador is more than happy to offload them to the US to alleviate the pressure on their welfare system. And yes, more recent immigrants are from Venezuela and El Salvador etc but demographically we're getting the exact same people.
They should not be here, period. But because the Democrats need a perpetual lower-class voting constituency that they can support with entitlements, the conservative Chamber of Commerce needs cheap labor and their respective governments make bank on remittances, here they are, at the expense of the American middle class.