tends to show. i'm very, very saddened by this. but john mccain was an american hero who did so much for the country, but this is unfortunately a very dark stain. >> the president apparently watched this interview and decided to further express his disdain for the late senator. he wrote, quote, spreading the fake and totally discredited dossier is a very dark stain against john mccain. he had far worse stains than this, including thumb's down on review and replace after years of campaigning to repeal and replace. john mccain's daughter, megan mccain tweeted back at the president very quickly. she fired back writing, quote, no one will ever love you the way they loved my father. i wish i had been given more saturdays with him. maybe spend yours with your family instead of on twitter obsessing over mine. the spat between these two prominent republicans carrying on months after senator mccain