Quid pro quo is not the problem. Diplomats do quid pro quo (one thing given in exchange for another) for the benefit of the country and its citizenry.
What is problematic and impeachable about Trump’s or his minions quid pro quo is that the quid pro quo is for the benefit of the President Donald Trump’s reelection. The quo is not even his to give. As a matter of fact, the military aid he was holding hostage to help his political campaign was voted for by the Congress to be given to Ukraine to benefit the furthering of democracy in that country and it’s fight against the Russian invaders. Therefore, the aid was not his to give or withold.
Allthingshominidae 