Regulate? Yes. Infringe? Absolutely not, and the courts have said so.
1. A regulation is an infringement. That's what it does.
2. I said there were no holdings restricting Congress this way, and there are indeed none. What you posted was dictum, not holding. This has been explained to you before. What is it about that that you're not getting?
However, I didn't restrict my reply to merely holdings. What is it about that that you're not getting?