For each of the following situations determine for whether it involves the principle of separation of powers, checks and balances, judicial review, federalism, or some combination of these principles. Specify the principle or principles involved and explain your answer.

b. The U.S. Congress passes a law requiring that Supreme Court sessions be televised.

c. Because a prison is very old and overcrowded. a state court orders the state legislature to spend $100 million on a new prison.

d. A state government passes a law legalizing recreational and medic- inal marijuana use despite a federal statute that lists it as an illegal drug. The federal Drug Enforcement Agency seizes drugs from a citizen in this state and prosecutes the person in federal court.

e. The U.S. Supreme Court rules that flag burning is a protected form of free speech under the First Amendment. In response to their constituents' wishes, senators and representatives from several states propose an amendment to the Constitution making it illegal to burn the flag.

f. A federal court serves the president of the United States with a subpoena seeking evidence of a crime. The president refuses to turn over the evidence claiming executive privilege. The U.S. Supreme Court rules that the president's executive privilege power is limited and that he must turn over the evidence.