In my world (the one where things are logical and make sense) this would operate like those warrant roundup stings where they tell the target population they've won a big prize and have to come to a centralized location to pick it up. There's balloons, photographers, and red-carpet treatment. Then they head behind the curtain to the back room to pick up their actual prize, and are met with (in this case) ICE agents and a bunch of chartered busses headed straight to the airport for a mass deportation exercise. (sigh) It's sad New York isn't my world.