The editorial cited Mr. Romney's very fine speech on the floor of the Senate, before the impeachment vote:
“I will tell my children and their children that I did my duty to the
best of my ability, believing that my country expected it of me,” Romney
said in his floor remarks, calling Trump’s conduct “grievously wrong.”
https://www.washingtonpost.com/opinions/history-will-remember-mitt-romney/2020/02/05/b5945e22-4856-11ea-8124-0ca81effcdfb_story.html