A completely unknown person comes to you saying that they are oppressed in their country because of X. You need to decide whether this is legitimate or not:

• Is s/he who s/he claims to be?
• Are her papers legitimate and legal?
• Does the country of origin allow, encourage or sanction oppression of people X?
• Is the likelihood of this person suffering serious consequences from this oppression something that justifies the demand?
• Is there a better solution to the problem?
• Are we going to house, feed, care for this person because of the level of trauma suffered?
• Where can we place this person so that s/he will be safe and not a burden to the community?
• etc.

Add to that the fact that I have a queue of several dozen/hundreds/thousands waiting for me to make the same research.

It takes time.