Why we don't have them ???
We spend our tax money on "other things".
Take a look at Leeland Yee's story. He is one of the biggest anti-2A politicians and is using his campaign contributions to fund his legal defense for felony gun running. He got caught running guns (including RPGs) of which a portion of the sales were to be funneled back into campaign war-chest. If it was you and I, that money would have been impounded/confiscated. How is that legal, moral or ethical ?
BTW, his anti-2A gun bills are still marching along with other politicians names on it.