Mormon seems to almost regret that there was no legal recourse which could be taken against Korihor. In the cause of righteousness, the great triumph and tragedy of a free society is that all beliefs are protected—even those detrimental to that society.
Hugh Nibley
"It was under the protection of this Bill of Rights that the infamous Korihor was able to carry on with perfect impunity. Only a miracle stopped him… What were all those leading authorities so helpless against? Against abridging the right of free speech and freedom of religion as ‘laid down by the commandments of God’ (cf. Alma 30:7). These are the words of the Book of Mormon… No one will deny that the smart-aleck criticism of Alma and his friends was bad, unfair, foolish, and injurious. What could be done about it? The answer is always the same. One replies by preaching the gospel with increasing fervor, and that is what the young Alma learned for himself.
’(Quoting Brigham Young) Do not you wish sometimes you had some power to pinch their ears? Do not you wish you had power to stop them in their mad career? Let the Lord Almighty do this…’
“A principle as strong as that of free agency itself exists from eternity to eternity.” (Brother Brigham Challenges the Saints, p. 423 – 424)
Neal A. Maxwell
"Clever but pathetic Korihor surely has his modern counterparts, especially in today’s settings in which so many people are especially free to choose for themselves. In his time (as in ours), ‘there was no law against a man’s belief; for it was strictly contrary to the commands of God…’(Alma 30:7-9.)
“Soon we may see such situations in which there will be ‘no laws against a man’s belief,‘ but also few laws against a man’s behavior.” (Plain and Precious Things, p. 69)