Defining Dina Demalchusa

An excerpt:

The Rishonim in Nedarim (28) distinguish between dina d’malchusa, fair laws that are necessary for good governance, and dina d’malka, arbitrary laws decreed by whim of the ruler. Halacha demands that we respect the former, but shows no recognition of the latter. A theoretical question: when the President withholds necessary anti-terror funds from a city, endangering the entire population, as an act of retribution against a Senator from his own party who dared cross him, are we dealing with dina d’malka or dina d’malchusa?  Or when the Attorney General threatens to prosecute those who engage in “anti-Muslim speech” but  makes no move to bring charges against a Secretary of State who kept top secret data on an unsecure mail server in a bathroom, are the laws of the land being enforced dina d’malka or dina d’malchusa? I can give plenty more examples, but you get the idea.  Just wondering at what point we’ve crossed the line.

I prefer his second example.

From Divrei Chaim, here.

Is One Allowed to Divorce his First Wife?

Rabbi Elazar said, “Whoever divorces his first wife, even the Altar sheds tears for him.” After the mishna on amud alef teaches the rulings of Beit Shammai, Beit Hillel and Rabbi Akiva regarding what constitutes “grounds for divorce”, based on how to interpret the verse in the Chumash regarding an acceptable reason to permit divorce (Duet. 24:1), Rabbi Elazer cites an additional source that discourages divorce if at all possible. He quotes a prophecy of Malachi, “And this second thing you do, to cover the Altar of the G-d with tears, weeping, and sighing, such that He will no longer turn to the offering, nor will He take anything willingly from your hand. And you will say, ‘Why?’ Because the G-d testified between you and the wife of your youth, that you dealt treacherously with her, and she is your companion and the wife of your covenant.” (Malachi 2:13-14)

Based on these verses Rabbi Elazar teaches, “Whoever divorces his first wife, even the Altar sheds tears for him.” This may sound like merely a poignant idea but not a legal issue, especially since nowadays we are without merit of having a Beit Hamikdash with an actual Altar. However, his teaching is in fact cited as halacha in the Shulchan Aruch, Even Ha’Ezer 119:3. The Rema cites Rabbi Elazar’s teaching as reason to forbid divorce even in a situation where it is permitted, providing the wife was not unfaithful (in which case it would be a mitzvah to divorce), or unless the woman also wants to divorce. The Mechaber states that one should “not hurry” to divorce (unless required by halacha), based on this same teaching of Rabbi Elazar.

An excerpt from Ohr.edu, here.