I guess I look at some things differently than so many. First I never buy a firearm with a credit card, it is either a check or cash.
Second, it bothers me not that the CC companies are being advised or made to report sales with a CC, so the government can trace them.
This is because the government is already able to trace any firearm sale, legally bought from a dealer, due to the DROS paper work required, which they have a copy of. So in some ways, the CC having to report something that is already headed to the government is nothing new. Just more added paperwork and another addition to the work load, they can not keep up with, even now. Just spinning their wheels.
I know this applies to legal firearms sales and not to those subverting the buy, from an individual or on the black market. Anyway, does it really matter if you are being legal and lawful with any firearm purchase ?