I think their referring to the 2/3 of the house and senate that voted for it and 3/4 of states ratified it. Weather or not the law had the desired effect relat

I think their referring to the 2/3 of the house and senate that voted for it and 3/4 of states ratified it. Weather or not the law had the desired effect relative to hypothetical legislative action is an open debate but undoubtedly could be overturned with less votes.