Ok.
How, are you supposed to takle somebody from behind? Lunge and throw your arms around the legs?
Thats almost same as clipping and that is outlawed for being so dangerous.
With NFL jerseys tightly tucked and tailormade you cannot really grasp anything but the collar/jersey neck.
Explain to me how tackling a ballcarrier around the legs from the front OR from behind is the same as clipping. Stupid remark.
The horse collar tackle is the type of tackle that has proven to cause injuries. And serious ones to.
And yes, you lunge and tackle for the legs or arm tackle around the waist. That's how most tackles are made in the NFL. Anything above the ball carrier's waist and you risk a penalty because you most likely are going for the head.