He sought a bribe from Ukraine.
No one can deny that "bribery" is impeachable, because the Constitution *says* it is.
My @washingtonpost article: washingtonpost.com/outlook/2019/1… @PostOutlook
(Officials “shall be removed from Office on Impeachment for, and Conviction of, Treason, Bribery, or other high Crimes and Misdemeanors," Art II)
Several administration officials have said as much (they sought a Ukraine probe in exchange for action).
The Johnson & Clinton cases were bogged down by a difficult question: What defines a high crime or misdemeanor?
By contrast, no one can deny that bribery is impeachable, because the Constitution says it is.
washingtonpost.com/outlook/2019/1…
(This appeared to be the his point when saying he had a "duty" to push for a probe of corruption on Oct 4)
"High crimes" & "abuse of power" are notoriously vague.
"Bribery" is quite clear, and it's right there in the Constitution:
washingtonpost.com/outlook/2019/1…