provide any examples of threats to Twitter attorneys. CNN reported that investigators sought information about several online accounts relating to threats against senator Mitch McConnell. The DOJ withdrew the subpoena one week after Twitter challenged it to Howell, who oversees federal grand juries, in March 2021. Prior to Barr's second tenure, the Trump Justice Department in 2017 and 2018 subpoenaed metadata from the iCloud accounts of at least a dozen individuals associated with the House Intelligence Committee, including that of Democrat ranking member Adam Schiff and Eric Swalwell, and family members, to investigate leaks to the press about contacts between Trump associates and Russia. Mueller investigation and report On January 14, 2019, a day before Barr's confirmation hearing for attorney general, Barr sent written testimony to the Senate Judiciary Committee regarding the eventual final Mueller report, saying "it is very important that the public and Congress be informed of the results of the special counsel's work... For that reason, my goal will be to provide as much transparency as I can consistent with the law." Upon taking office, Barr refused calls to recuse himself from overseeing the Mueller investigation, despite his June 2018 memo arguing that the special counsel had no right to investigate Trump. On March 22, 2019, Mueller concluded his special counsel investigation and gave the final report to Barr. On March 24, Barr submitted a four-page letter to Congress describing what he said were the report's principal conclusions: first, that the Special Counsel did not establish conspiracy or coordination between the Trump campaign and Russia's efforts to interfere with the 2016 election; and second, that the Special Counsel made no decision as to whether to prosecute Trump for obstruction of justice, quoting "while this report does not conclude that the President committed a crime, it also does not exonerate him." Barr stated that the Special Counsel's decision "leaves it to" Barr to decide if Trump obstructed justice. Barr and Deputy Attorney General Rosenstein themselves concluded that the evidence "is not sufficient to establish" obstruction of justice by Trump, and made the decision not to press the charge. According to federal judge Amy Berman Jackson, the Barr letter which declined to charge Trump, and a Justice Department memo purportedly containing advice to Barr that Trump should not be charged, were "being written by the very same people at the very same time". Jackson also stated that email evidence