Letter from [Ranking Member of Senate Committee on Foreign Relations] to the [U.S. Department of State Inspector General] Regarding the [State Department's Withholding of Critical Security Assistance to Ukraine], October 3, 2019 [open pdf - 453KB]
From the Letter: "I am writing to renew my September 24th request for you to urgently investigate the State Department's withholding of critical security assistance to Ukraine and to expand that investigation to specifically cover the role of senior State Department officials in the Trump-Ukraine scandal, including Secretary of State Pompeo and his Counselor Ulrich Brechbuhl. Through information you provided to congressional committees and admissions by President Trump's agent, Rudy Giuliani, it appears that Secretary Pompeo may have inappropriately and unlawfully leveraged State Department resources-paid for by U.S. taxpayers- to cause an investigation solely designed to advance President Trump's personal and political agenda. Mr. Brechbuhl may have wittingly or unwittingly participated in this effort. Such behavior is squarely within your jurisdiction, and must be investigated in a thorough and expedited fashion."
U.S. Senate Committee on Foreign Relations: https://www.foreign.senate.gov/