The lead Republican negotiator in bipartisan gun-control talks told a skeptical crowd in Texas that the framework for a potential deal was pro-Second Amendment, as negotiators headed into the weekend still hung up on a provision denying guns to people who abuse their dating partners.

Speaking over loud boos from the audience, Sen. John Cornyn (R., Texas) ticked off gun proposals he had ruled out in the talks, such as bans on certain guns or high-capacity magazines. He recounted that he told negotiators that the goal was to better enforce existing law and keep guns out of the hands of criminals and the mentally ill.