agreement. That month, an official Cabinet Yellowhammer document leaked, predicting that a no-deal Brexit would lead to food, medicine and petrol shortages. Gove said the leaked dossier outlined a "worst-case scenario". Interviewed in September 2019, Gove declined to say whether the Government would abide by legislation designed to stop a no-deal Brexit. During the 2019 Speaker of the House of Commons election, Gove nominated Labour MP Chris Bryant to replace John Bercow. Gove helped to prepare Johnson for the 2019 general election debates by playing the role of the Labour leader Jeremy Corbyn. He offered to stand in for Johnson during a Channel 4 debate on environmental issues but the editor of Channel 4 News said the debate was only open to party leaders. On 13 February 2020, Gove took on additional responsibilities as Minister for the Cabinet Office, succeeding Oliver Dowden, who had been appointed Secretary of State for Digital, Culture, Media and Sport, in Johnson's first large reshuffle of his government. During the first COVID-19 pandemic lockdown, Gove generated confusion after saying on ITV's Good Morning Britain that children with separated parents were not allowed to move between their parents' homes. He later apologised and clarified that what he had said was not the case. When Johnson was self-isolating after having been tested positive for COVID-19, Gove stood in for Johnson briefly from 27 March 2020 at the daily briefings of the pandemic, until Gove self-isolated himself after a family member developed COVID-19 symptoms. In May 2020, Gove was criticised after his wife Sarah Vine shared a bookcase picture "as a very special treat for my trolls" which featured a book by the Holocaust denier David Irving, and a copy of The Bell Curve, which controversially claims that intelligence is highly heritable and that median IQ varies among races. Another book in the photograph was The Strange Death of Europe by Douglas Murray, which, according to The Guardian, cites Enoch Powell and argues for protecting white Christian Europe from "outsiders". After Johnson said that the UK had ended trade talks with the EU in October 2020, Gove said that the door was "still ajar" if the EU made changes over issues including fishing access and that "We hope the EU will change their position and we are certainly not saying if they do change their position we can't talk to them". Gove was part of a committee of