The number of migrants entering the United States is skyrocketing, with authorities grappling under the latest surge. Sanctuary cities that are welcoming migrants are becoming unstuck by the influx, with residents making their concerns heard. And as the southern border crumbles, President Joe Biden is yet to take any action. In this Sky News Digital Originals special report, we look at exactly who is entering the US and what happens once they arrive. And, with Title 42 now expired, what can be done to help curve the current disaster along the southern border?