that's not to say there wasn't evidence. but not that met that threshold. >> during the white house press briefing, white house says clapper is changing his story. >> it is interesting how the story changed. now suddenly saying i wasn't sure about it. the burden seems to be on him, not us. >> today director clapper also expressed doubts about mr. trump's version after dinner with fired fbi director james comey in january. >> he wanted to have dinner because he wanted to stay on. a dinner was arranged. i think he asked for the dinner. >> clapper says it was trump who invited comey. >> he had been invited to the white house to have dinner with the president. >> and the former fbi chief was uncomfortable with the invitation. >> you're in a difficult position to refuse to go but i do know he was uneasy with it. for just for the appearance of compromising the independence of the fbi. >> the dinner came just one day