An impeachment inquiry against US President Donald Trump is centered on a July phone call between Trump and Ukrainian President Volodymyr Zelenskyy in which the US leader asked his Ukrainian counterpart to open an investigation into former US Vice President Joe Biden, who is also a top Democratic 2020 presidential contender, and his son, Hunter Biden. Officials William Taylor and George Kent also made some revelations surrounding the case. Take a look at the latest updates.
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