Any country has the right to decide who gets in and most certainly have a right to turn away those with well established criminal records.
I posted what it seems to me to be your position. Truthfully, I have no idea what it is. I don't think you really want to state it in any concise statement.Wait, wasn't I was being horribly unfair when I paraphrased you as saying that they drive down wages? Make up your mind.