American Government and Politics in the Information Age: "Chapter 15: The Courts"
Read this chapter. Judges in the United States play a more active role in the political process than they do in most other democracies. Unlike other countries, the US has a dual judiciary - federal and state court systems. In both federal and state courts, individuals must have standing to sue, and must assert a personal injury. Courts decide only justiciable cases, not political questions.
Click https://saylordotorg.github.io/text_american-government-and-politics-in-the-information-age/s19-the-courts.html link to open resource.