On the day Bob Mueller obtained a guilty plea from a lawyer in the Russia probe, former Trump campaign aide Sam Nunberg, who was cited 19 times in ‘Fire and Fury’, tells Ari Melber he’s “worried” about Trump’s own lawyer Michael Cohen. Nunberg says for the first time Mueller’s team asked him for an interview, and adds that Donald Trump “screws” everyone, but has done it to Michael Cohen the most.