Impediment to expulsion

Impediment to expulsion are practical or legal barriers that prevent a country from enforcing an expulsion or deportation decision of a non-national.
Examples of impediments to expulsion in certain countries are:

A government's decision on a temporary enforcement halt or suspension of all deportations to a specific country due to for example war.
The home country refuses to receive the person.
The foreigner's identity was not established.
Transport is not possible.
Serious difficulties would arise due to the foreigner's health condition.

In some countries and cases, a person who has been asylum seeker but has received negative decision, may still be entitled to reside in the country where the person has applied for a residence permit due to such impediments, and may get a temporary or permanent residence permit.