I can't say as I am opposed to a policy that realistically will curb gun violence without infringing on the rights of those who are not the cause of said issue, but, I have yet to see such a proposal, and when I do see it, it will probably be attached to a unicorn ridden by a leprechaun who will pull it out of Santa's sack.
Especially considering we have things that DO prohibit people from owning firearms, yet as we have seen with Operation Fast and Furious, that is obviously just a sham, and violent offenders who do try to purchase firearms do so with almost total impunity. No one likes to admit the fact that crime, especially gun crime, is at it's lowest point in, according to FBI numbers, 50 years or so?
Meanwhile, the solve rate for rape is at ~3%, and murder around ~60%, but yeah, lets focus on legislation that has never been proven to do anything other than impact law abiding gun owners, or a list containing children and people obviously not terrorists like congressmen and dignitaries. Because politics.