The event at the Rose Garden was on sat Sept. 26 and it was being held while President Trump introduced Amy Cony Barret as his pick for the supreme court vacancy. All of the people that tested positive were there for the ceremony except I do not think Senator Ron Johnson and Chris Christie were there. Lee, Tillis, Conway, Hope Hicks and Melania were there as were Bill Barr, Mitch Mconnell,Lindsey Graham and others. I just happened to watch it and I saw them all there.
Lee and Tillis are both senators on the judicial committee.
Christie was at Rose Garden. There are photos of him hugging people.