Emissary Bill Taylor attested before a censure demand that he was uncovered to Mr Trump required Ukraine to test ex-Vice-President Joe Biden's dealings.
President Trump requests there has been no such course of action, or exchange of favors, in Ukraine approach.
Responding to the latest statement in Congress, White House press secretary Stephanie Grisham said in a declaration: "President Trump has done nothing terrible
assault from far-left executives and radical designated authorities waging war against the Constitution".
One Democrat called Mr Taylor's affirmation "the most censuring presentation I've heard".
President Trump requests there has been no such course of action, or exchange of favors, in Ukraine approach.
Responding to the latest statement in Congress, White House press secretary Stephanie Grisham said in a declaration: "President Trump has done nothing terrible
assault from far-left executives and radical designated authorities waging war against the Constitution".
One Democrat called Mr Taylor's affirmation "the most censuring presentation I've heard".