"How the Bishops Found Their Voice"

Austin Ruse over at The Catholic Thing:

What a difference four years make. In 2004 a small number of bishops publicly criticized the pro-abortion position of the Democrat running for president. This election year, they have grown to a large and lusty choir taking strong public stands against the pro-abortion politics of the Democratic ticket and their loudest supporters. Why such a difference from 2004 to now?

[Find out.]