Hillary Clinton pushed that shit as first Lady under Clinton. It's a common reoccurring theme that lefties use to push gun control. The idea is to mandate insurance, then raise insurance rates through the roof so no one can afford to buy and own a gun legally. It has 2 problems. 1. Gun ownership is a right, so trying to mandate insurance to exercise a right is a tough fight and not likely to get much traction with gun owning dems. 2. It's a poor tax. The people who need guns the most are the poor people in shit hole crime infested neighborhoods. So, while Richie Rich can hunt $25,000 game at high fence ranches with his insured hunting rifle, the people in most need of guns won't be able to afford the insurance. And those poor minorities are the dem base, so it doesn't look good for the politician pushing it. It's rayciss and classist.