This is from Marbury v. Madison. (Screenshot #1)
Now he is assuming that anything he does as president, even stuff that has nothing to do with the office of the president, comes under official duties.
Specifically, he seems to think that directing slates of electors to persuade electors not to certify the election for Biden. (#2)
Of course, it is completely laughable to think that anything to do with slates of electors is in the "outer rim" of the duties of the president.
6/