A while back, my colleague Adriana Cardona-Maguigad started noticing a lot of homeless men in the Back of the Yards neighborhood where she worked. She asked one after another: Where are you from? She heard the same story again and again. They were drug addicts from Puerto Rico, sent to Chicago to get help in well-appointed treatment centers. They found none of that, and ended up on the streets. And then they told her something even stranger. Many of the men said they’d been sent to Chicago by police or other officials in Puerto Rico.