Re: It really is stunning
"A majority of Americans are for stricter gun control, background checks, mental heath screening, etc"
... but they are not in favour preventing the public from owning firearms.
Even then, if you do get changes to the legislation, how are you going to enforce it with a country that has porous borders to the South across which organised criminals are able to ship substantial quantities of narcotics and weapons?
Suggesting changes to legislation is just massaging your own ego unless you prepared to go out yourself and take the guns off of the people (without access to a gun of course).