Insurance fees: _HRA, please explain!

[bill dedman]

I have no firsthand information (don't run NHRA), but a couple of friends who do, have told me that a few years back, they started having to pay an insurance premium along with their entry fee, that provided insurance for the Pros.... but, not the Sportsman racers.

Is this a fact, or is it just hearsay?

And, if so, where is the justification for it?

Any information will be appreciated.