It's been happening at a slow rate sometimes faster depending on the year since the 1980s and every time our customs department stamps a passport, they should be ready in 90 days to find the person who hasn't left the country. Because unlike other countries we don't have checkpoints. Even Europe relaxed it's papers policy. But literally it's a invasion from the entire world, and this invasion has led to government inflteration, financial infiltration, housing, and food supply infiltration, policy infiltration, the list goes on and on. It needs to be stopped.