(COMBO) This combination of pictures created on January 24, 2018 shows US President Donald Trump on the South Lawn of the White House in Washington, DC, January 5, 2018; and former FBI Director Robert Mueller, special counsel on the Russian investigation, at the US Capitol in Washington, DC on June 21, 2017. - According to March 22, 2019 US media reports, independent prosecutor Robert Mueller has submitted his final report on the investigation into possible collusion with Russia in the 2016 election. (Photos by SAUL LOEB / AFP)