See if your topic is listed under Browse all Pro/Con issues in the center of the main search page.
When you click on a topic, you'll see a brief Overview of the issue and at least one Essential Question.
Note that each Essential Question can be turned into a thesis statement!
When you click on an Essential Question, you are given a thesis statement/argument for each side of the issue, as well as three articles that support each side.
Scroll down to see the full results list of full-text articles and other sources.