Rick Perry !
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https://www.npr.org/2019/10/17/59395...-perry-resigns
Trump reportedly blamed Perry earlier this month for that now-famous call with Ukraine President Volodymyr Zelenskiy in which Trump pressed Zelenskiy to investigate his potential political rival former Vice President Joe Biden and Biden's son.
Perry says he wanted Trump and Zelenskiy to talk strengthening energy business ties between the two countries. Regarding the Biden issue, Perry told the Christian Broadcasting Network, "As God is my witness, not once was a Biden name — not the former vice president, not his son — ever mentioned."
Perry's name first emerged in the appendix of the whistleblower complaint that launched the impeachment inquiry. He was tapped to attend Zelenskiy's inauguration last May.