In all fairness, Mr. Friedman might be more of an expert on this issue, but certainly control of sales, how one possesses a gun and who can legally possess a gun, is important.
Of course, there are better people to speak to border controls and the like, but certainly it is always better not to have any sugar at all in the gas can, so to speak, than to try to take the sugar out of the gas once it has been added.