So you have an illusion that this is about getting to the truth by Trump & Co? They're trying to retrofit conspiracy theories about F'n Hillary.
Barry, just something to ponder during the refractory periods. (Sorry, I couldn't help myself on that.) Is it possible for the Administration to investigate Biden in an acceptable way? If he had directed the Justice Department and State Department to do it on their own instead of enlisting Slimy Rudy, wouldn't the complaint be that he's using government resources to attack a political opponent much like they complained about Nixon using the IRS to target political opponents or much like the Right often complains that Obama used the IRS to target conservative groups?
I know what Democrats would say. "But Biden didn't do anything!" "There's no evidence of corruption!" Guess who else said that? Trump and his supporters (including many here) and frankly, every politician who has ever been put under investigation for wrongdoing, and most of them were just as right (or wrong) as Biden supporters are now. The "no evidence" charge is putting a very conclusory cart before the horse, and to be honest, 90 percent of the people making that claim (including journalists) don't even know what the word "evidence" means. Investigations are launched to find evidence. What prompts them to begin is reasonable suspicion of some kind of wrongdoing.
I may not care much about Trump, but I do care about precedent and unintended consequences and incentives. One of the reasons the refusal to remove Clinton bothered me is that it set a horrible precedent. At the time that was happening the same people who are now saying Trump doesn't have to have broken the law to be impeached were saying Clinton shouldn't be impeached because it's not illegal to have an intern bobbing your knob in the Oval Office and then using your power as President to give said intern a federal job to entice her to shut up about it. Then when he was caught committing a crime to cover it up and to corrupt a civil trial, those same people were saying that even a felony isn't necessarily enough to impeach.
That was 20 years ago and we moved on, but precedents were set. Specifically, there is nothing sexual a President can do to warrant removal no matter how seedy and embarrassing it is so long as it isn't illegal. Furthermore, a President cannot be removed for perjury. When he takes an oath to tell the truth in court, in a deposition, etc., he can say whatever the hell he wants, and it's all OK. Both of those precedents are hideous, but that's where we are.
Suppose we do impeach Trump just because he wanted Biden investigated (rather than based on procedure). Another set of precedents and incentives will be set. First, anyone who has done something illegal or improper can simply decide to run for President, and he or she effectively gets immunity from prosecution if the current President is from the opposing party. Second, any kind of dirty business interest (foreign or domestic) will go out of their way to hire family members of potential presidential candidates. The value on the Hunter Bidens of the world will go way up. Why? Because those business interests will know that they are effectively buying immunity when the opposing party is in power. If Trump gets tossed on that basis, will Hunter Biden be worth $50K per month? Hell no. He'll be worth $5M per month.
I'm not bringing this up out of any emotional or political connection to Trump. I didn't vote for him, and frankly, if he left office, the GOP would probably be better off in the long term. Furthermore, from a personal standpoint, if Trump is the nominee in 2020, I could still be convinced to vote third party like I was in 2016. If Pence is the nominee, that is out of the question. However, the people pushing to remove him need to be thinking about what they're really doing and need to know that the bases for removal matter a lot.