Gun Facts

So, I'm reading this document on gun facts...It is very interesting. Well, I come across one of the facts. It states:

"Fact: According to the Supreme Court, criminals do not have to obtain licenses or register their
weapons, as that would be an act of self-incrimination."

Huh? Read it again. And again, if necessary. Do you understand that statement?

Now, the registration part is only required in Boston, Hawaii, Chicago, and DC. May be other places I don't know.

At any rate, the statement seems illogical.

Just for reference on the fact above: Haynes vs. U.S. 390 U.S. 85 1968