Federal courts may declare illegal any action violating the Constitution.
-Will this be the principle of Rule of Law
The rule of law is certainly involved. Are there other choices?
theirs popular sovereignty,
limited government,checks and balances, federalism and finally separation of power
Rule of Law is not one of the choices? Then that's not the answer. Consult your text materials to find out what each of these concepts means: federalism, etc. Alternatively, type the word or phrase in your search engine and look it up that way: as in popular sovereignty.
Yes, the principle you mentioned aligns with the concept of the Rule of Law. The Rule of Law states that everyone, including government officials, must abide by the law and that no one is above it. Therefore, if an action violates the Constitution, which is the supreme law of the land in the United States, federal courts can declare it illegal, ensuring that the principles and provisions of the Constitution are upheld.
If you want to verify this information or understand it further, you can refer to relevant legal resources such as the United States Constitution, legal textbooks, or consult authoritative legal sources, such as legal scholars or experts in constitutional law. Additionally, you can access official court rulings and judgments to see how federal courts have applied this principle in specific cases.