Sweden is considering a surprising new plan that might let people get paid to leave the country. This idea comes from a recent government report that suggests expanding a program already in place. Right now, this program offers money to refugees and migrants who agree to return to their home countries. They get a one-time payment of about $960 for each adult and $480 for each child, plus their travel costs covered.

But the new proposal suggests something even more dramatic. It might exte...