US President Joe Biden insisted on Friday that he would not drop his bid for a second term, even as calls for him to bow out grow following his damaging debate performance against Republican rival Donald Trump. “Let me say this as clearly as I can, I’m staying in the race. I’ll beat Donald Trump,” he forcefully declared to a crowd of chanting supporters at a campaign event in the state of Wisconsin. Pressure on Biden to step aside as the Democrat’s 2024 presidential candidate has been growing from within his own ranks since he faced off against Trump at a 90-minute televised debate on June 27….