friday laying into his predecessor for his refusal to accept the 2020 election results. >> it was among the wors derelictions of duty by a president in american history. >> reporter: mr. trump's rivals for the gop nomination, who trail him badly in iowa polls, looking to strike a balance between criticizing him and not alienating the movement of voters he leads. >> my concern with donald trump being the nominee is the entire campaign will be subsumed with legal issues, criminal trials, and january 6th. >> i think president trump was the right president at the right time i agree with a lot of his policies chaos follows him. >> that was nikki haley there. garrett is joining us. garrett, after this weekend, mr. trump is going to be leaving the campaign for a bit >> reporter: that's right. peter, he next appears in a courtroom in washington, d.c. for an appeals court hearing on the question whether he's immune from prosecution for actions he took as president.