Tricia Newbold, a longtime White House security adviser, told the House Oversight and Reform Committee that she and her colleagues issued “dozens” of denials for security clearance applications that were later approved despite their concerns about blackmail, foreign influence or other red flags, according to panel documents released Monday.

Newbold, an 18-year veteran of the security clearance process who has served under both Republican and Democratic presidents, said she warned her superiors that clearances “were not always adjudicated in the best interest of national security” — and was retaliated against for doing so.

“I would not be doing a service to myself, my country, or my children if I sat back knowing that the issues that we have could impact national security,” Newbold told the committee, according to a panel document summarizing her allegations.