On March 4, 2017, Donald Trump wrote a series of posts on his Twitter account that falsely accused former President Barack Obama's administration of wiretapping his "wires" at Trump Tower late in the 2016 presidential campaign. Trump called for a congressional investigation into the matter, and the Trump administration cited news reports to defend these accusations. His initial claims appeared to have been based on a Breitbart News article he had been given which repeated speculations made by conspiracy theorist Louise Mensch or on a Bret Baier interview, both of which occurred the day prior to his Tweets. By June 2020, no evidence had surfaced to support Trump's claim, which had been refuted by the Justice Department (DOJ).