Senate gun negotiations have reached a critical stage, and hiccups are starting to show. Senator John Cornyn (R., Texas) is one of the most important signatories to the framework. He has long been the GOP’s go-to man on gun policy. He was key to getting the framework together. He’s also now the most publicly pessimistic about the deal making it across the finish line. Cornyn had initially said he hoped to get the text of the bill done by the end of this week, which could still happen, but he’s become more pessimistic as the week has gone along. “I’m