What is "control law"? That seems to be a vague term that could be applied to any law that one does not personally agree with. The issue here is gun regulation, and the Brady Scorecard (I think just about everyone would agree) is an accurate depiction of how extensively firearms are regulated from state to state. If the Scorecard was indeed arbitrary or advancing an agenda, I think you'd have a strong point, but it is based on a very specific set of objective criteria which is evenly applied from state to state. Furthermore, that criteria can be provided as a citation along with the table to make that clear.