"The gloves are off," former US President Donald Trump tells his supporters in New Jersey, as he takes jabs at his rival Joe Biden, calling him "the worst president ever of any country", "a fool" and "a moron". "As you know, I've come here from New York where I'm being forced to endure a Biden show trial," Trump says to boos. "Carried out by a radical Democrat district attorney," the Republican presidential candidate adds ahead of potentially damaging testimony in his criminal trial next week. IMAGES AND SOUNDBITES