1) I am pressed to ask you for evidence on your affirmation that every time the SEC acted on the benefit of the US government they got sued and lost.
2) Comparing the SEC to DMV regulations is a stretch. Yes theoretically both should regulate without providing benefits to any particular group or person. However, regulators decisions taken by agencies such as the SEC, create financial consequences far more impactful than whatever DMV action can do in regards of whether they want to help US Gov or not.