Donald Trump December 14, 2018 6:07 pm Trump Names Mick Mulvaney Acting Chief of Staff President Donald Trump announced on twitter Friday that Mick Mulvaney will take over as acting chief of staff, replacing John Kelly. US & World Videos 5:49 Kelly Clarkson hilariously attempts handmade pasta with chef Evan Funke 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business' 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:36 O.J. Simpson's cause of death revealed 0:59 Paramedic involved in Elijah McClain's death sentenced to 4 years of probation