Earlier today, the Wall Street Journal reported about how the US Justice Department has been investigating whether Republican Rep. Matt Gaetz of Florida had a sexual relationship with a 17-year-old girl and paid her to travel with him, people familiar with the matter said. Investigators are examining whether Mr. Gaetz, a close ally of former President Donald Trump, violated federal sex-trafficking laws, the people said. Those laws make it illegal to transport someone younger than 18 across state lines to engage in sex. The investigation, first reported by the New York Times, began last year when Mr. Trump was president,...