Supposed to play a role in the campaign and it was not part of obstruction that we know of. those are the two issues mueller is looking at. he sent this subpoena to the trump organization. so the question is what is it about? we know in 2017, last year, it came about trump tower -- moscow. a deal that was being put together for that that the president had signed a term sheet about. >> mr. mueller here apparently not inclined to heed the warning from the president, that red line that president trump urged him not to cross, and that red line being, michael, a look into his business practices, co...