Because there, the courts have said under our Constitution that the executive branch's Constitutional authority - to answer the question of one of your previous callers - to protect classified information comes into direct conflict with the criminal defendant's right to a full and complete defense under a number of amendments to our Constitution.
The Constitution's "speech or debate clause" bars the executive branch from executing a search warrant for non-legislative materials in the office of a member of Congress.
Will we have a judicial branch that enforces the limits on government power that appear in the text of our Constitution, while deferring to the people and their elected officials in cases where the Constitution permits such action?