Nikki Haley questions Trump's mental fitness after gaffe

Republican presidential candidate Nikki Haley turned a spotlight on Donald Trump's mental fitness Saturday, after the former president falsely accused her of failing to stop the violent assault on the US Capitol on January 6, 2021. The comments from Haley, who turned 52 on Saturday, were among the most direct challenges from a fellow Republican to the mental fitness of Trump, who is 77.