The billionaire private equity tycoon Stephen Schwarzman, a former ally of Donald Trump who turned his back on the ex-president, has decided to support him in the 2024 race for the White House. Schwarzman, widely seen as one of the most powerful men on Wall Street, defected from Trump less than two years ago, when he declared that the time had come for a new generation of leaders to take over the Republican party. On Friday, he changed course and announced he would donate to the former US president’s campaign to regain the White House. “I share the concern of...