Sen. John Cornyn had just left a convention center stage in Houston, where he had been mercilessly booed by conservative activists furious at his leading role in the most serious gun-law talks on Capitol Hill in a generation, when the Texas Republican picked up his phone and sent a message.
The day before, Cornyn had stormed out of a key bargaining session inside the Capitol, telling reporters, “I’m done.” And video clips of the Houston jeers were already bouncing around social media, leading many observers to conclude that the talks — launched in the wake of the May 24 massacre inside a Texas elementary school — were on the brink of collapse.