At a rally last night outside Myrtle Beach, Marco Rubio declared: “We’re keeping Guantanamo — forever! It’s a good base.” As the crowd cheered, a man yelled: “Waterboard Hillary!” The Florida senator did not rebuke him. Instead, he laughed it off. “The press is here,” he said, per Sean Sullivan. “I didn’t hear what they said. I know it wasn’t a bad word, that’s all that matters!”