I'm very skeptical that you're having a hard time sourcing this information. I have pages from my google search with easily 75% of the results confirming my claim.
> "Restrictions are in place exclusively at the NRA-ILA Leadership Forum at the direction of the United States Secret Service," spokesman Lars Dalseide wrote in an email to USA TODAY. He called the claim that the NRA is banning guns at its conference "incorrect."
Either way, here you go:
https://www.usatoday.com/story/news/factcheck/2022/05/27/fac...
> "Restrictions are in place exclusively at the NRA-ILA Leadership Forum at the direction of the United States Secret Service," spokesman Lars Dalseide wrote in an email to USA TODAY. He called the claim that the NRA is banning guns at its conference "incorrect."