Using testimony from the closed doors, as well as public reporting, the memo attempts to undermine several key arguments from Democrats describing Trump's alleged obligation in his actions against Ukraine, particularly in his decision to seize US security assistance the country in exchange for investigations into his political rival.
The four central defenses, detailed in the course of the memo, are as follows:
"These four key points undermined the story of the democratization of the president that President Trump utilized US security support and a presidential meeting to force Ukraine to investigate the president's political rivals, "the memo says.
Trump claimed that the investigation's focus is based on second-hand and second-hand witnesses – despite many of the witnesses who have testified behind closed doors with first-hand knowledge of potentially improper administrative action regarding US military assistance to Ukraine.
The President also reiterated his call for former Vice President Joe Biden and his son, Hunter Biden, to testify.
During the July 25 phone call, Zelensky addressed US military aid to Ukraine, which has been at the center of US politics since Russia and its agents invaded eastern Ukraine in 2014. Zelensky told Trump he was interested in buying additional tank missiles from the United States.
Trump has denied any wrongdoing and has insisted that the conversation with Zelensky was "perfect."
CNN's Veronica Stracqualursi, Marshall Cohen and Jeremy Herb contributed to this report.