Databases

PAIS International and Archive is an extensive database for articles on public affairs.

Select "descriptors" from the drop-down menu. [Descriptors are the same as subject headings in this database.]
Search for: stem cell*. The asterisk is a "wildcard." It will search for descriptors beginning with those letters; in this case, stem cells and stem cell research.
You may want to make your research more specific by adding a Keyword or Keywords on the second search line. For example, if you add: new jersey, you will get all of the articles with stem cells or stem cell research as Descriptors and the phrase new jersey anywhere in the record.

Worldwide Political Science Abstracts is a similar database that focuses on politics and political science. It uses the same search interface as PAIS. Since there is no descriptor for stem cells in this database, search for stem cell* as a Keyword, possibly combined with other Keywords.

Websites

The Stem Cell: The Science, Ethics, Business and Politics of Stem Cell Research
A blog edited by Chris Scott, Director of the Stanford University Program on Stem Cells in Society.

Stem Cell Research
From the Pew on Religion and Public Life, a useful list of resources, including recent news articles, links to advocacy groups, and the policies of the major presidential candidates.

World Stem Cell Map
A color-coded map summarizing stem cell policies in countries around the world, with links to policy statements. From the University of Minnesota Medical School.

StemGen: Ethical, Legal and Social Issues on Stem Cell Research
Includes a database of laws and policy statements of countries and organizations.