As the investigation into potential links between Donald Trump’s 2016 Presidential campaign and the Russian government continues down new avenues, questions are arising regarding both the obtaining and review of evidence.

A January 2018 memo from President Trump’s then-lawyer John Dowd specified that the Trump campaign provided special counsel Robert Mueller with over 1.4 million document pages, while the White House turned over 20,000. The investigation has since expanded, with Mueller subpoenaing the Trump Organization for documents and making a referral that led to the FBI’s seizing of documents from President Trump’s personal attorney, Michael Cohen.