I look at it from this standpoint. It is highly unlikely in many parts of the world that the government now laying claim to an artifact has any relationship to the government if any at the time that existed in the same area. Just because you live in the same area should not automatically be an absolute right.

The care of the artifact must be weighed against those who seek to claim it.

Even items freely given have had attempts to take them back. I also am greatly concerned with antiquities returning to areas which have experience real strife if not outright wars. Especially the rash of religion based conflicts even between sects of the same. We have seen the destruction visited upon irreplaceable sites and this must be a consideration before any object is sent to a claimant.