Currently in Washington DC, Public impeachment hearings are taking place investigating if Donald Trump committed an impeachable offense by using the his presidential power to convince Ukrainian President Volodymyr Zelensky to open an investigation into Joe Biden, The current leader in the democratic party presidental primary, and his son Hunter Biden about their dealings in Ukraine during the Obama administration. The reason why the democratic party thinks that President Trump should be impeach is because they believe that Trump wrongly used his presidential power by threatening to withhold aid(money) to the country if he did not comply with his request. The transcript of the call has been released so the American People can decide for themselves if Donald Trump is guilty of this crime

Source: https://www.foxnews.com/politics/trumps-ukraine-call-transcript-read-the-document