[injb]

>> The minority argued that if you are exerting constant pressure backwards

But that isn't how it works. The pressure on the trigger has to be varied for the gun to keep firing. She seems to think that keeping your finger in the same place constitutes "constant pressure" but that's simply not true. If there was constant backward pressure, then your finger would follow the trigger when it moves backwards in recoil. In that case, the bump system wouldn't work. To be fair I think she just genuinely doesn't understand this and the majority are partially to blame for overcomplicating it.

With a semi-automatic firearm, you must relieve the pressure/force on the trigger between shots and for that reason it cannot be "a single operation of the trigger". If this fits the definition of "single operation" then you'd only be allowed to fire a semi auto once. Firing it again the following year on your birthday would make it a machinegun.