Donald Trump denied dozens of criminal counts of willfully mishandling US government secrets and scheming to prevent their return, in a historic first appearance Tuesday in federal court. It was the former president's second arraignment as he battles a deluge of legal threats, coming just 10 weeks after he was charged with a string of felonies in Manhattan over hush money payments to a porn star. Trump appeared before a judge in Miami to be formally presented with 37 charges brought by the government following a special counsel probe that opened after an FBI raid of his Florida mansion last August.