President Trump should sit down and answer questions from Special Investigator Mueller but that doesn’t mean he has to remember the answers.  A matter of fact I’ve never heard anyone being tried for forgetfulness.  President Trump’s Lawyers should advise him if he feels  Mr. Mueller’s question are leading in one direction that not being sure of the answer might help lead better to his side. It might be difficult for the President who is so strong minded to take such a stance but when a dog goes on the attack it’s best not to give them something to bark about.