In a battle over life insurance proceeds that generated a solo dissent in the U.S. Supreme Court about the Constitution’s contracts clause — which prohibits states from enacting laws that impair the obligation of contracts — Mark Sveen named his wife Kaye Melin as the beneficiary of a life insurance policy he purchased in 1998; a 2002 Minnesota statute automatically revoked the designation when they got divorced in 2007; and his children from a prior marriage claimed the money as contingent beneficiaries …