From the blurb:
In the fervor to impeach President Trump, his political enemies have ignored the text of the Constitution. As a civil libertarian who voted against Trump, I remind those who would impeach him not to run roughshod over a document that has protected us all for two and a quarter centuries. In this case against impeachment, I make arguments similar to those I made against the impeachment of President Bill Clinton (and that I would be making had Hillary Clinton been elected and Republicans were seeking to impeach her). Impeachment and removal of a president are not entirely political decisions by Congress. Every member takes an oath to uphold the Constitution of the United States, and the Constitution sets out specific substantive criteria that MUST be met.