Sometimes history turns on a phrase. Patrick Henry had, “Give me liberty or give me death.” Ronald Reagan gave us, “Mr. Gorbachev, tear down this wall.” And now Vice President JD Vance has given us “I don’t really care, Margaret.” If you missed it, this new rallying cry emerged during an interview between CBS’s Margaret Brennan and Vance about illegal immigrants who weren’t vetted for terrorist connections. When Brennan insisted, “Yes, they were,” Vance cited an illegal immigrant who had planned a terrorist attack in Oklahoma on Election Day last November. Brennan, perhaps believing this was a gotcha moment, asked,...