I perused the NY Times article that is the basis for the article posted, fully understanding the inherent bias in the Old Gray Lady.
There was never a doubt in my ex-military mind why Trump appointed McConnell's wife to this Cabinet post. It was to coopt McConnell as the ultimate defense to an impeachment proceeding. It hasn't mattered a whit to Trump that McConnell didn't get Obamacare repealed, or rammed border security legislation through the Senate. It was enough that judges have been approved (yes, a good thing), and tax cut legislation was passed.
From her Wiki page, Ms. Chao has voiced regrets that she sometimes regrets not having children. I, for one, do not share those regrets. The only place for little turtles scurrying around is a pet store, not in the Halls of Congress.