A whistleblower's complaint about President Donald Trump, made public on Thursday, says White House officials were so concerned about what the president said in a July call with Ukraine's new leader that they intervened to 'lock down' the transcript of the conversation. The whistleblower, whose name and gender has not been released, lodged the formal complaint out of a belief that Trump was 'using the power of his office to solicit interference from a foreign country' in the 2020 election. In the call, Trump discussed having Ukrainian President Volodymyr Zelenskiy help investigate the Biden family's business dealings. The matter is now the subject of a formal impeachment inquiry that was launched by the House this week. The whistleblower reportedly has witnesses to corroborate the complaint.