The U.S. sent an Iranian Christian to Panama. It had no plan for what came next.

PANAMA CITY — Two years ago, Arsalan Saleh Fard had never heard of this Latin American metropolis. He would have been lost if asked to identify it on a map. But it is here, at times sleeping on a mattress on the floor, where the Iranian-born Saleh Fard was living a life in limbo.