Gene Maddaus Senior Media Writer George Clooney, Ben Affleck, Scarlett Johansson and a group of other A-listers gave a proposal to SAG-AFTRA leadership on Tuesday, which they hoped would help end the 98-day actors strike. But the proposal was rejected on Wednesday by the union’s negotiating committee, which is sticking to the demands it has spelled out over many weeks of negotiations. To understand why, it might help to delve more deeply into the proposal.