I am a bit concerned that some readers may use this site to get visa or legal advise instead of consulting the correct authorities.
Should we allow questions like "How do I find out which visa I need to travel from X to Y", but close questions like "Which visa do I need to travel from X to Y". They are temporally localised - and the accepted answer may be incorrect.
Similarly questions like "Can I carry a knife in Z", might be better closed - with the recommendation that the questioner rephrase along the lines of "How can I find out about weapons laws in Z"