Three House committees have subpoenaed Pompeo for documents related to the Trump administration's dealings with Ukraine.
Representative Adam Schiff, the committee's chairman, said he expects the author of the whistleblower complaint to testify "very soon."
The loudest GOP voices are trashing the whistleblower, but some Republicans aren't so sure.
Trump allies are twisting a report that clears the whistleblower of partisan bias to argue the exact opposite.
The president dragged the VP's name into the Ukraine scandal and critics are celebrating.
Reporter Nicolle Wallace interrupted the feed of the president speaking to fact-check him and tell viewers that “the president isn’t telling the truth."
President Donald Trump urged Ukrainian President Volodymyr Zelenskiy to investigate his political rivals.
"Do us a favor, though," the president said, according to a call summary released by the White House.
The president tweeted a string of angry messages after Nancy Pelosi announced a full impeachment inquiry in response to his call with Ukraine's president.