Show me the law that he has to be appointed or elected to fulfill the presidents mission...
Conservatives Should Want to Impeach Trump
From your fake news NY times story in your link....
Trump’s willingness to hand over control of American policy toward Ukraine to such a figure is
remarkable, especially in light of
conservative jurists’ long-standing efforts to hold each branch of government to its duties as formally spelled out in the Constitution. Even if House Republicans can’t justify impeaching Trump for shaking down the Ukrainians, they should at least call him to account for an unconstitutional behavior whose gravity, in all likelihood, would be obvious to them if the president were from the other party.
Remarkable is not illegal...and bucking jurists long standing efforts to keep things the way they are is not unconstitutional....its needed and over due....