Michael Cohen, former Trump lawyer, willing to testify before special counsel
President Trump's former lawyer and fixer says he is now willing to cooperate with special counsel Robert Mueller. Michael Cohen alleges that then-candidate Donald Trump knew in advance about a controversial June 2016 Trump Tower meeting where Russians offered to give damaging information on Hillary Clinton. That claim would contradict repeated denials by the president and what the president's son and son-in-law said under oath. Major Garrett reports.