The 2016 letter, sent by members of the Senate Ukraine Caucus, was signed by Republican Sens. Rob Portman, Mark Kirk and Ron Johnson, as well as Democratic Sens. Dick Durbin, Jeanne Shaheen, Chris Murphy, Sherrod Brown, and Richard Blumenthal and focused on longstanding issues of corruption in Ukraine and urged reforms of the government.The difference between 'then' and 'now', is that the Obama Administration went after 'corruption in Ukraine', something beneficial to the US and Taxpayer Money. Trump went after a 'Political Rival' for the benefit of Trump and his re-election, and had nothing to do with safeguarding Taxpayer Money. Trump used Taxpayer Money as an extortion tool. As Ukraine is being occupied by Russian Federation Forces, Trump deftly withholds vital Military Aid until Zelensky 'does him a Favor', namely, publicly state Ukraine is investigating the Bidens.
https://www.google.com/amp/s/amp.cn...oed-biden-on-ukraine-reforms-kfile/index.html
We can call these Republicans to testify as well in regards to Joe Biden and how he was fighting corruption in the Ukraine.