As many as need it, because I'm not afraid of them and don't assume they are all dirty or all rapists, like you all do.  I have worked in the nursery Industry and in landscaping and "these people" whether they are here legally or not still pay taxes and work they asses off.  They are nice, hard-working people, who came here because it is way worse in their country, and I admire their work ethic.  I have met very few US born workers who aren't lazy f-ing whiners, taking smoke breaks every ten minutes and complaining as soon as it gets tough.  Unfortunately, the GOP is so two-faced on this issue it is sick.  All those GOP politicians, including your buddy Trump, corporate farmers and nursery owners use "illegals" all the time, yet they turn around and call into hate radio and complain about them, and rile up the masses against them so they can get votes.  Unless you are native american your ancestors were immigrants too, and people hated them and wanted them to leave.