Exercise 3: A Court Challenge in Each Country — Possible Solution ================================================================================================================== The key to this exercise is recognizing that the difference isn't about which judges happen to agree or disagree with the law being challenged - it's about what tool is even available to a court in each system in the first place. THE US CASE If a US federal law is challenged in court as fundamentally unjust, and that challenge is framed as a claim that the law is unconstitutional, a federal court - ultimately the Supreme Court - can actually strike the law down entirely, voiding it as if it had never validly existed. This is judicial review, established not by the Constitution's own text but by the Court's own 1803 ruling in Marbury v. Madison, built on Chief Justice Marshall's real declared principle that it is "the province and duty of the judicial department to say what the law is." A federal law that conflicts with the Constitution - in a US court's own final judgment - simply does not survive. THE UK CASE If a UK Act of Parliament is challenged in court on the exact same grounds - that it is fundamentally unjust - a UK court has no equivalent power. Per UK Politics Fundamentals Chapter 6, parliamentary sovereignty means courts cannot invalidate an Act of Parliament, however unjust a judge might personally find it. At most, a court can interpret the law narrowly, issue a declaration of incompatibility (in the case of human-rights legislation), or otherwise flag the issue - but the Act itself remains valid law until Parliament itself chooses to change or repeal it. WHY THIS IS A STRUCTURAL DIFFERENCE, NOT A JUDGE DIFFERENCE The real reason isn't that American judges are more willing to strike down unjust laws than British ones, or vice versa - it's that the two systems have fundamentally different answers to the question "what is the supreme legal authority in this country?" In the US, per Chapter 1's own Article VI Supremacy Clause, the Constitution itself is supreme - even Congress's own laws answer to it, and judicial review is the real enforcement mechanism that gives that supremacy actual teeth. In the UK, per UK Politics Fundamentals Chapter 6, Parliament itself is the supreme authority - no document, and therefore no court interpreting a document, sits above it. A UK judge who personally found a law unjust would still have no formal legal tool equivalent to American judicial review, because the UK's own constitutional design simply never gave courts that role in the first place. ANSWER: In the US, a federal law challenged as unconstitutional can actually be struck down by a federal court under judicial review (established by Marbury v. Madison, 1803) - because the Constitution itself, per Article VI's Supremacy Clause, is the country's supreme legal authority. In the UK, a court cannot invalidate an Act of Parliament regardless of how unjust it may be, because under parliamentary sovereignty Parliament itself - not any document or court - is the supreme authority. The outcomes differ not because of how any individual judge feels about the law, but because only one of the two systems gives courts a formal power to override the legislature's own enacted law at all. WHY THIS WORKS AS AN ANSWER ------------------------------ It explicitly rejects the "different judges, different opinions" framing the question warns against, and instead grounds the difference in each country's own real answer to "what is supreme here" - tying directly back to Chapter 1's Supremacy Clause and UK Politics Fundamentals' own parliamentary sovereignty material.