"In June 2016, Haney testified before the Senate Judiciary Committee, where he alleged that the Obama-era DHS had ordered him to delete hundreds of files..."

"... about reputed associates of Islamic terrorist groups. Haney made the case that several attacks in the U.S. could have been prevented if some of the files had not been deleted....  [I]n February 2016, Haney claimed Obama had thrown the U.S. intelligence community 'under the bus' for failing to 'connect the dots' after a Nigerian Muslim terror suspect was linked to a failed terror plot on Christmas Day in 2009. 'Most Americans were unaware of the enormous damage to morale at the Department of Homeland Security, where I worked, his condemnation caused,' Haney wrote, referring to Obama. 'His words infuriated many of us because we knew his administration had been engaged in a bureaucratic effort to destroy the raw material — the actual intelligence we had collected for years, and erase those dots. The dots constitute the intelligence needed to keep Americans safe, and the Obama administration was ordering they be wiped away.'"

From "Philip Haney, DHS whistleblower during Obama era, found dead, police say" (Fox News) — wiped away by "a single, self-inflicted gunshot wound."