Given the fact that you appear to be stipulating to my point that he is within his right to exercise his authority you cannot solely make the case of corrupt intent that rises to the level of an impeachable offense.In this I agree. He is exercising his authority. The issue, IMO, is whether a president "exercising his authority," is impeachable when there is corrupt intent. I personally believe it is. Others do not. In any instance within government, when a person uses their authority with corrupt intent, they are either fired are arrested. Since the president can't be arrested, then that must mean he can be fired (i.e. impeached).
I happen to believe that there are still legit outstanding issues that Trump is trying to address that falls within his current authority. Should he therefore have to relinquish that current authority just because he is a candidate up for re-election?