Dina (is that her first name?) Dmalchusa means that if Mr. Palisade is mekadesh his Mrs. with the money obtained from someone going on his highway between 51 and 75 (I think above that is for low flying aircraft), then she is his lucky wife.
Yes, that is more or less the type of context I have seen D”MD in as well.
But then, I’ve never attempted to research it thoroughly.
Anyone have a cite for the notion that speeding, or dumping stuff into navigable waters of the united states without a 401 or 402 permit, is an issur which is incorporated into halacha? IOW, that Issur D’Malchusa Issur?