We have universal (depending on what that means) background checks for everything except private sales currently, you cannot go to a store and buy a gun without submitting one. Private sales are person to person and represent a rounding error in gun sales. Guns are a hot button topic and most people are uninformed so stats like "want universal background checks" doesn't actually amount to anything actionable legislatively because according to most gun owners, we have that, but many that don't own think its the wild west.