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US president Joe Biden says democracy is under attack from Donald Trump and MAGA Republicans.
Former US president Trump turned out to a Republican rally in Philadelphia to back TV doctor Mehmet Oz, the Republican candidate for US Senate, and Doug Mastriano, the candidate for governor.
Trump used the platform to label Biden an "enemy of the state".
Photo: AFP
Does the speech reveal a desire to take another tilt at presidency? Or does he just enjoy being in the centre of attention?
US political correspondent Josh Gerstein spoke to Susie Ferguson.