Last year, I saw a Winchester Model 99 .22 rimfire that had a thumb trigger. They are pretty rare, so obviously the idea didn't catch on in the U.S. either. I could see them being a potential problem with tang safeties being so prevalent. A natural, almost subconscious push to release what you thought was the safety would fire the gun.

A true sign of mental illness is any gun owner who would vote for an Anti-Gunner like Joe Biden.