All foreign aide is based on a quid pro quo. All of it, otherwise it isn’t a tool of foreign policy. Trump tied continued lethal military aid to Ukraine (which Obama balked at for years) to an existing DOJ investigation. By mentioning Biden, Trump introduced the likelihood that he was using his office for personal political gain (akin to using the IRS to target an adversary’s 501c status). Trump should be censured by the house and senate, and the congress can move on and do their job. Progressive bloodlust will be partially slaked, democratic lawmakers will save some face, Trump’s pride will be stung, and America will continue to be awesome.