I'm kind with the "All three plus focus on those hiring illegals". At the same time, I really love the folks I've met up here who have come up, sometimes generations ago, legally and are amazing people who contribute greatly to our communities. In addition to "all of the above" I'd like to see a faster, cheaper track for those who are willing do immigrate here legally and want to work, and really assimilate.
There are folks here ranging from leeches to downright dangerous, but no one culture has a monopoly on that - I guess to summarize, I'm all for keeping out the dregs and freeloaders (even exporting some of our own if we could) while making the process better for the ones who are willing and able to contribute, as many are.