Donald Trump has admitted that Stephen Miller is “top of the totem pole” as he considers appointing his next national security adviser. Miller, the current White House deputy chief of staff, is reported to be the leading candidate to replace Mike Waltz after Waltz was ousted from his position in the wake of the Signalgate scandal.

U.S. President Donald Trump said on Sunday that Stephen Miller, his deputy chief of staff, was a frontrunner to be potentially named as national security adviser following the departure of Mike Waltz.

Marco Rubio is juggling his roles as both Secretary of State and National Security Adviser. President Trump suggested Stephen Miller could be up for the role of NSA. NBC News' Courtney Kube joins Katy Tur to report more from the Pentagon.