[gamblor956]

Federal agencies enforce crimes that cross state boundaries. With rate exceptions, domestic violence cases do not. Agencies exist to enforce the laws of Congress. That if their entire reason for existing.

OTOH, most corporate crimes do cross state boundaries and thus are within the jurisdiction of both state and federal authorities.

With respect to cigarettes, the product itself doesn't kill people. There are people that live for decades smoking multiple times a day. The secondary effects kill many people, but there isn't a sufficiently strong correlation to ban cigarettes outright.