Central Hudson Gas & Elec. Corp. v. Public Serv. Commn

In Central Hudson Gas & Elec. Corp. v. Public Serv. Commn. (447 U.S. 557 [1980]), the Court set out a four-part test for reviewing a regulation that impinges on commercial speech: "[1] [the speech] must concern lawful activity and not be misleading. [2] Next, we ask whether the asserted government interest is substantial. If both inquiries yield positive answers. [3] we must determine whether the regulation directly advances the governmental interest asserted, [4] whether it is not more extensive than is necessary to serve that interest."