>> since the election, this has been the experience that our administration and our family has been having the interest in overturning the results of the 2016 election. >> reporter: and now, new attacks from the president on a possible new opponent come 2020. fellow new yorker michael bloomberg. >> i know michael, he became a nothing there is nobody i'd rather run against than little michael. that i can tell you. >> reporter: late tonight, bloomberg started filing paperwork to appear on primary ballots and while he would be running in the same moderate lane as biden the former vice president said he would welcome bloomberg if he runs but biden pointed out his own poll numbers are looking pretty good right now. >> thank you. the white house is denouncing claims about the president in his soon to be published book by a purported trump insider. new excerpts are just out. kristen welker has details. >> reporter: the anonymous author of "a warning" claims to be