It was Trump's most direct attack yet on his former personal lawyer, Michael Cohen. "I did NOT know of the meeting with my son, Don jr. Sounds to me like someone is trying to make up stories in order to get himself out of an unrelated jam (Taxi cabs maybe?)," the president tweeted. Trump's raging response come after reports Cohen reportedly said was prepared to tell special counsel Robert Mueller Trump knew of his son's 2016 meeting with Russians offering dirt on Hillary Clinton.