A Manhattan grand jury has indicted Donald J. Trump for his role in paying hush money to a porn star, according to people with knowledge of the matter. The precise charges are not yet known, but the case against him has kicked off a historic moment in American politics. The investigative reporter Ben Protess discusses the development — which will shake up the 2024 presidential race and forever mark Mr. Trump as the nation’s first former president to face criminal charges — and what happens next. Guest: Ben Protess, an investigative reporter for The New York Times.