Will rule of law succeed where Congress failed and hold Trump accountable?

If the grand jury goes against him, Trump would be the first former US president charged with a crime

Standing in court, the former president pleaded not guilty to charges of financial crimes that he insists are part of a politically motivated witch hunt. Jacob Zuma, once the populist leader of South Africa, cut a humbled figure on Wednesday - and offered a potential glimpse of America's future.

A similar fate for Donald Trump became significantly more likely with reports that New York prosecutors have convened a grand jury to decide whether to indict him on criminal charges.