This article is really informative, and here but an exerpt:
“First, Pope Francis has not hid his intention of making the curia more efficient. He appointed Cardinal Wuerl as a new addition to the Congregation for Bishops, someone whom Pope Benedict had already placed trust in when he appointed Cardinal Wuerl as the U.S. guardian of the Anglican Ordinariate.
If you asked me to pick who has a better working knowledge of the makeup, demands and expectations of the American episcopate right now I would say the state-side Cardinal Wuerl, not Cardinal Burke who has been in Rome for half a decade at this point. So from one aspect, this is a move towards efficiency.”
Liberals often advance their goals in the name of efficiency.
That's hardly an excuse for putting someone of Wuerl’s ilk on the Congregation for Bishops.