"Good morning, Mr Trump." The innocuous greeting from a New York judge belied the grim expression on Donald Trump's face as he sat flanked by his lawyers in the Manhattan Criminal Courts Monday. While his legal team tussled with the prosecution over what evidence could be admitted, the first former US president to face a criminal trial listened intently and -- barring a few words spoken in response to Judge Juan Merchan -- silently. The case, which could prove enormously consequential for both Trump and the country, is being heard in courtroom 1530 inside an imposing, scaffolding-clad Art Deco courthouse on New York City's Centre Street. Trump wore his signature red tie with a white shirt, dark blue suit and a US flag lapel pin as Merchan declared the trial open. The 45th president fixed the magistrate with a defiant look, having accused him of being "corrupt" on his Truth Social platform after Merchan declined repeated calls from the defence to recuse