Let us say an inner city family, sick of living in a crime-filled, drug dealer dominated neighborhood decided to move out to the suburbs. They found a nice house in a nice neighborhood and moved in.
What if the house they chose was not theirs? What if they just found an empty house, one for sale, to move into? You know, maybe the Grover's house. He got transferred to Houston, if you remember.
What if the new neighbors started taking produce from your garden? Perhaps they grabbed a steak or two from your freezer? Would it be OK if they slipped into your garage and borrowed tools, or your car? How would you feel if your new neighbors asked if you could take them to the hospital? Would you agree to pay the doctor bill? Are you willing to pay for their kid's college?
Why should you object? The new neighbors are just looking for a better life? They are just trying to do the best for their family.
Is there a difference between this scenario and that of illegal immigration?