Farrell also said that Trump's legal team needs to push back hard against Mueller and legally "challenge" every motion he makes. As for the seeming invisibility of Attorney General Jeff Sessions in regard to Mueller's legal overreach, Farrell said he could not explain it and does not understand it. "There's a very grave challenge here," said Farrell on the May 2 edition of Lou Dobbs Tonight. "Mueller is doing everything he can in a political, quasi-legal way to destroy any possibility of Trump 2020. They know he's in office now, they know he’s got a little over two years left, and they will do everything they possibly can to make sure it's a one-term presidency."