Q. Trying to locate the answer to the following question: In a criminal case, may the government appeal if the defendant is found not guilty?

Start at the COM Library home page (link below) and click the link to  databases.

The 'Government and Law' page lists a few databases appropriate to this topic.

The  All EBSCO Government & Law databases is a good place to start.  Select words or phrases that describe what you are looking for:  "not guilty", "government", "appeal" might be some to start with.  Be sure to limit to Full Text and Scholarly (Peer Reviewed) Journals.

After getting some responses you can limit further using various limits - In this case, in the Geography option, limit by United States.

Then you can further refine you search using  Subject Thesaurus Term and/or Subject.

A limit to Criminal law or Criminal procedure may be helpful.