Three why questions

Tell me why, three why questions have not sunk into more people’s minds about the Ukraine mess caused by the US president?

– Why did people who heard the “perfect” phone call try to hide it?

– Why does the US president want witnesses called, but prevents those in the know from testifying?

– Why don’t more people believe hard working, honorable public servants who testified under oath at great risk instead of a person who is known to be cavalier with the truth?

I would like to hear some answers to these three why questions starting with people named McConnell, Graham and Barr. This American would like to hear from folks like Mulvaney, Pompeo, Giuliani, and Pence under oath. Tell me why I should not be able to do so?