A conservative group is asking the Office of Congressional Ethics to launch an investigation of Rep. Alexandria Ocasio-Cortez for accepting free tickets to Monday’s Met Gala, where she wore a custom gown that said “Tax the Rich.” The self-declared socialist congresswoman drew broad social media scorn for partying at the elite $35,000-per-ticket event while presenting herself as their rabble-rousing foe. Thomas Jones, founder of the American Accountability Foundation, wrote in an ethics complaint that he believes Ocasio-Cortez, who represents parts of the Bronx and Queens, broke House rules by accepting “an impermissible gift” of free tickets to attend the annual...