In other developments related to the impeachment inquiry, three House committees have subpoenaed Secretary of State Mike Pompeo to turn over documents related to the administration’s dealings with Ukraine. This comes as Trump and former New York Mayor Rudolph Giuliani are facing accusations they ran a shadow foreign policy in Ukraine outside of normal channels, but on Sunday Giuliani insisted Pompeo was aware of what was happening. Meanwhile, the Trump administration’s special envoy for Ukraine, Kurt Volker, has resigned.