This is the 1st time a President was impeached without specific laws. I dont understand your link, does it (or you) say the feds never charged anyone with bribery or the feds didn't have any bribery laws (or both)? Bribery is in the Constitution as one of the reasons for impeachment.
https://www.politico.com/story/2017/01/ukraine-sabotage-trump-backfire-233446
and I'll bet thats just the tip of the iceberg...
Did Ukraine stand in his way in 2016?
If the Democrats were under scrutiny - including spying - for 2-3 years we'd be seeing them go to jail too. But no one conspired with the Russians. Well, the Democrats did... They paid Christopher Steele to dig up dirt on Trump from Russia. Wanna bet we find Democrats conspired with Ukrainians? And I'd bet they were on the west's payroll too.
As for Russia and Ukraine, are you suggesting Ukrainians interfered because they opposed Trump? How should Trump feel about that? How did the Democrats respond when Russians interfered because they opposed Clinton? They spied on Trump and red baited the country based on lies.
Trump gets impeached for asking Ukraine to look into the Bidens and Burisma. Is there no justification to look into that arrangement. Or are political opponents off limits? If thats the case, how do you explain spying on Trump before the election?