Prosecutors said Parnas and Fruman conspired to contribute foreign money including at least $1 million from an unidentified Russian businessman to candidates for federal and state offices to buy influence.
Progress at talks between Russian and Ukrainian envoys have raised hopes of convening the first international summit in three years on ending the fighting between pro-Russian separatists and Ukrainian government forces.
In speaking so publicly Thursday, a defiant Trump pushed back against critics who have called such requests an abuse of power, essentially arguing that there was nothing wrong with seeking foreign help.
Pompeo would not say whether he thought Trump's comments in the July 25 call with Ukrainian President Volodymyr Zelenskiy were inappropriate or whether he believed they warranted the complaint of an intelligence community whistleblower that triggered the impeachment probe.
Democrats are looking into Trump's request to Ukrainian President Volodymyr Zelenskiy during a July 25 phone call to investigate former Vice President Joe Biden, a leading contender in the Democratic race to run against Republican Trump in the 2020 election.