A version of it is in National Defense Authorization Act for Fiscal Year 2017. See "SEC. 1287. ((NOTE: 22 USC 2656 note.)) GLOBAL ENGAGEMENT CENTER." Similar principles, slightly different language.
https://abcnews.go.com/amp/Politics/firewall-counsel-protect-government-secrets-russian-election-meddling/story?id=57068964&__twitter_impression=true
What is a "firewall counsel"?