Trump White House Video Watch LIVE: NSA O’Brien, Advisor Grenell, and Press Secretary McEnany Hold a Press Briefing RSBN StaffSeptember 4, 20200970 views Friday, September 4, 2020: Watch Live as NSA O’Brien, Advisor Grenell, and Press Secretary McEnany Hold a Press Briefing from the James S. Brady Press Briefing Room at The White House.