the Democrats are attempting to conduct an extralegal investigation outside the process established for impeachment in order to maintain their one sided investigation and prevent any defense from being presented. Why the fuck would Trump participate in this farce of an "investigation" completely outside of the law?
This is false.
The constitution gives the House the sole power of impeachment. It doesn't specify how Impeachment proceedings should be initiated and it certainly does not give the president the right to decide whether or not his own impeachment hearings are valid.
Trump took an oath to defend the constitution. By not complying with House oversight he is violating that oath and will rightfully get another impeachment article for doing so.
Lindsey Graham was right:
Article III of impeachment against Richard Nixon was based on the idea [he] failed to comply with subpoenas of Congress. Congress was going through its oversight function to provide oversight of the president. When asked for information, Richard Nixon chose not to comply and the Congress back at that time said, Youre taking impeachment away from us. Youre becoming the judge and jury. It is not your job to tell us what we need. It is your job to comply with the things we need to provide oversight over you. The day Richard Nixon failed to answer that subpoena is the day that he was subject to impeachment because he took the power of Congress away from Congress and became the judge and jury.