Tom Servo, cobra81, thanks for the replies. I completely understand what you guys are saying. But I do think that the $10 fee (or tax if one chooses to call it) is a small price to pay to make it easier to keep firearms out of the hands of felons and / or wife beaters.
I really wouldn’t call it a tax anyhow. Taxes are usually sources of revenue for the taxing body. Here in Illinois, the fee goes directly to the Illinois State Police, which is not a taxing body. And I’m sure the administrative work costs much more then the $10, so it’s negative revenue, and I wouldn’t call that a tax.
But again, I understand, and thanks for the replies.