Former US vice president, Joe Biden, says a rough transcript of a summer phone call between President Donald Trump and Ukraine's leader is "very revealing.''
In the call, Trump pressed Ukrainian President Volodymyr Zelenskiy to look into Biden, his Democratic rival in the 2020 White House race.
Biden's comment came Wednesday in response to shouted questions from reporters after a Manhattan Beach, California, fundraiser in which he never mentioned the impeachment inquiry or the phone call transcript.
Biden called the president a "serial liar'' who represented a threat to America's future.
Biden told the crowd of about 150 donors: "We should not walk around with our heads down, like everybody is because he's got us so depressed. It's time to lift our heads up.''-AP