President Donald Trump's former Russia adviser, Fiona Hill, urged lawmakers in the House of Representatives impeachment inquiry on Thursday not to promote "politically driven falsehoods" that cast doubt on Russia's interference in the 2016 U.S. election.

In testimony to the House Intelligence Committee, Hill said based on their questions and statements some members of the panel appear to believe that Russia and its security services did not conduct a campaign against the United States during the 2016 presidential race, and that perhaps Ukraine did.

Some Republican members of the Democratic-led committee have advanced the discredited theory, which has been embraced by Trump and his political allies.