The United States Catholic Bishops (USCCB) now have a brand new website on Faithfull Citizenship at: http://www.faithfulcitizenship.org/
The site has sections targeted for: All Catholics, Diocesan & Community Leaders, Parish & School Leaders, and Young Catholics. Links within each section will take you to a many different kinds of resources, e.g. What the Church Teaches, Prayers and Reflections, suggestions on Taking Action, Family Guide, Do's and Don'ts when addressing the issues, planning ideas. The section for Young Catholics has a "Are You A Faithful Citizen" quiz, podcasts and music -- with a video to come soon.