From the viewpoint of U.S. political culture, the political stances of the U.S. Conference of Catholic Bishops look like this (roughly):

How about from the bishop's perspective? The political categories of Democrats and Republicans are not the categories in which policies are evaluated in the vision of Catholic social teaching. Even the categories of conservative (conserving something or going back to a previous better condition) or progressive (a need for change and new things) are difficult to apply because while the Church proclaims timeless, unchanging values, she also recognizes the need for a radical renewal of the face of the earth in every aspect.

So from the Church's point of view, the problem is not that society is too "right" or "left" on any particular issue--Catholic social teaching transcends that kind of black and white thinking. Instead, perhaps the bishops would classify the prevailing political views of U.S. society in the following way, according to what principles of Catholic social teaching are at stake, or threatened. The U.S. Bishops' 2003 document Faithful Citizenship enumerates the principles of CST this way:
* Life and Dignity of the Human Person (Life)
* Call to Family, Community, and Participation (Community)
* Right and Responsibilities (Rights-Resp.)
* Option for the Poor and Vulnerable (O for the P)
* Dignity of Work and The Rights of Workers (Workers)
* Solidarity (Solidarity)
* Caring for God's Creation (Creation)

What might the bishop's see when they survey the U.S. political landscape? Maybe they see the need to challenge mainstream political views with these principles in the following way:

"The Catholic approach to faithful citizenship begins with moral principles, not party platforms. The directions for our public witness are found in Scripture and Catholic social teaching...
"These themes anchor our community's role in public life. They help us to resist excessive self-interest, blind partisanship, and ideological agendas."
Faithful Citizenship: A Catholic Call to Political Responsibility - U.S. Conference of Catholic Bishops, 2003