It's not a sham and it's really pretty simple. First off, your assertion that Politico is a left wing democrat mouthpiece is simply NOT factual, It's rated as one of the least biased and most factual news sources available:
https://mediabiasfactcheck.com/politico/
Cruise around that site and see how the news sources you rely on are rated for comparison. Do a search for Fox News, Breitbart, Sinclair, or maybe you're into OANN by now, I don't know, but check it out.
Secondly, The impeachment process does not have to have a crime associated with it to be a valid tool to remove a person from office. Precedents are already in existence to bear that out.
Third, The House is NOT responsible for Trying the President in a trial setting, that's the job of the Senate with the Chief Justice (Roberts) presiding. President Trump was offered the opportunity to participate in the House proceeding, but declined. Which brings us to your question about Obstruction of Congress. Not only did President Trump refuse to participate in the House Process, he willfully withheld documents, phone records and White House personnel from the process thereby obstructing Congress's oversight responsibility. See, that was simple.
Fourth, Abuse of Power; The President DOES have the right to investigate corruption or any other activity by a foreign government receiving aid from the US. However, he doesn't have the right to use Congressionally mandated, taxpayer provided funds, in the neighborhood of $400 million as leverage to obtain foreign assistance in denigrating his primary opponent in the upcoming election. It's against Federal Election Commission rules for any candidate to receive something of value from a foreign entity to help in an election.
The Democrats aren't "making up their own laws" as they go along, that's just an ignorant statement. I'll grant you the Democrats are trying to find a way to phrase the charges to best describe the inappropriateness of the President's behavior, but when you're in a target-rich environment it's hard to settle on just a couple. Whether it's shagging a porn-star and then paying her off in secret while your wife's home with the new baby, or mocking a disabled reporter by acting like a spazz, or most lately, jealous-tweeting about Time magazine's Person of the Year, there are many examples of this President's unsuitability for office. None of which will mean anything to you because of your bias. But, hey okay, we all have biases and we can agree to disagree.
Finally, talking about waste of taxpayer money, $114,000,000 for golf trips. The expense of these hearings pales in comparison.
You may be right about President Trump being re-elected, but in my opinion, the fact that the Democrats are up-holding what I see as their right of oversight provided for in the Constitution, and staying true to the oath they took to protect the Constitution from all enemies foreign and domestic, underscores why this is NOT a sham. And if President Trump is re-elected, we'll still be here pushing back on the things that are not in support of the Nation's best interest or against established practice and law.
All my best,
XXL