This is a slippery slope as well. The government can just say "it's for the well being of everyone" to do anything they want. Most deaths in a vehicle accident are because of high crashes. Lets make the speed limit everywhere 20 mph, it's for the good of everyone. Just like the government is already doing with "it's for national security" clause.
Hmm.. Well I don't think Americans will let it get that far. We have books like 1984 to keep us straight. ;) Besides, even if America reached a state of total socialism, it would be long after I am dead. And I really couldn't care less what happens after I'm dead.
Dana Reeve, died 44 of lung cancer, nonsmoker. Google it if you want. If you honestly don't think second hand smoke is dangerous than go ahead and smoke around your kids.
If that isn't evidence, I don't know what it.