How about they do all that in their own country?
There is not an infinite amount of land, water, and living space in this country or haven't you noticed?
Do you have something against legal immigrants? Are you a member of an indigenous tribe in the United States?
Hey - whatever they look like and wherever they come from are of no importance, and as long as they become functioning, contributing, responsible, self-sustaining members of society then _I_ have no probs with them.
IF they're planning on coming over here to make a quick buck, ignore the rules and laws, demand citizens' rights, and take every available opportunity to start their suck at the public teat then - hey - I'm all for shooting 'em first-step-over-the-border.
Like all others, they deserve a chance to prove themselves before being neutralized and disposed-of. If they initially try to enter illegally then they abrogate all their basic human rights.