If you're asking me personally, on this topic? Wide open borders, not even a wall, zero employment eligibility checks, but no welfare. Only way to win is to also benefit others in voluntary trade or seek voluntary charity. I have no problem with "illegal" immigrants, only those who purposefully target and drain the coffers of Americans by popping in for a citizen-baby and then run every public benefit available with their anchor baby.

Part of the reason why immigrants were so successful and beneficial in the 1870-1920 era boom was that labor was so badly needed in the burgeoning age of industry. But really, the other half is there was no other option -- you did something productive or you were completely fucked.