George Letsas: Non-Justiciability of Prorogation: A Matter of Law and Logic?. GCHQ case, House Of Commons, Judicial review, justiciability, prorogation, R (Miller) and Others v The Prime Minister (Miller 2), Scotland, UK government, UK Parliament, UK Prime Minister, UK Supreme Court Leave a comment. Alan Greene: Miller 2, Non-justiciability and the Danger of Legal Black Holes. 13 Sep. In R.