They were given protection status do to an earthquake it's been 16 years it seems rational to return them home. What would be a fair reason to end this temporary status to you?
For me personally, the conditions should be as safe or safer than the current conditions under which a person resides before considering removal of protective status, or else it would be cruel and inhumane to move them (to worse conditions).
I think preventing unnecessary human suffering should be the number one concern, do you not?