You need 10 sources minimum including:
The above are requirements, but you may also include policy reports, books, magazine articles, blogs, and essays as additional sources.
Academic Search Complete (EBSCO) -- Click in the "scholarly peer reviewed journals" box.
Research Library (Proquest) -- Click in peer reviewed box.
Opposing Viewpoints -- Pro/Con essays. There are lots of types of sources here. I'd scroll down and choose the "viewpoints" articles after you search.
CQ Researcher -- In-depth overview articles on controversial topics.
Pew Research Center -- A nonpartisan fact tank about issues, attitudes and trends in America.
Statista -- contains statistical charts on a variety of topics
Films on Demand -- academic films on a variety of topics