Yes, bar them from everything, hey, bar them from the country, that will solve the whole problem. GET THEM OUT OF HERE. Our founders knew about this, not sure how they knew, I guess they saw the pattern from slavery and indentured servants, and people pouring in to work, but they knew which is why they gave the US government the authority to prohibit immigration into the United States after the year 1808 and stated specifically to prohibit the migration or importation of such persons as the states may wish to admit.