The Memorandum, just like the federalization of troops in Oregon, completely disregards constitutional safeguards against such practices.

Here is the backstory.

When James Madison and his colleagues crafted the Constitution and shortly thereafter the Bill of Rights, they intentionally created a limited federal government. They confined the federal government to the 16 discrete powers granted to Congress. Those powers identify areas of governance uniquely federal. Conspicuously and intentionally absent is public safety. To clarify this, the 10th Amendment articulates the reservation by the states of powers not granted to the feds. This relationship is called federalism.

Constitutional scholars often refer to the powers retained by the states as the police power. The use of the word "police" here doesn't mean police officers on the streets. It means the inherent and never-delegated-away powers of the states to govern for the health, safety, welfare and morality of all persons in those states.

In his famous Bank Speech, in which Madison argued brilliantly but unsuccessfully for a textualist understanding of the Constitution — he was opposing the creation of the First National Bank of the United States essentially because it was not authorized by the Constitution — he laid out the principles of limited government. He reminded those in Congress who had just sent the proposed Bill of Rights to the states for ratification that they did not constitute a general legislature that can right any wrong or regulate any behavior or intrude upon any relationship. Rather, their powers were limited to federal matters.

Merely because an area of governance is reflected nationally does not make the area federal. Chief among these is the police power.

The wall between state and federal law enforcement was generally recognized until 9/11. Prior to that, the FBI and other federal police agencies, none of which is authorized by the Constitution, generally devoted their efforts to enforcing federal law. After 9/11, the Bush administration — perhaps to divert public attention from its having slept on that fateful day — began a federal/state collaboration to fight "terrorism."

Just as the war on drugs in the 1970s and '80s weakened the privacy protections of the Fourth Amendment, the war on terror in the 2000s weakened the constitutional fabric of federalism. With a public still shell-shocked over the attacks, and a Congress pliant to the presidency and the intelligence community, Congress enacted the Patriot Act, which permits federal agents to write their own search warrants, and the states fell subject to federal domination over their policing. Slowly, the feds began to intrude and dominate into areas of law enforcement with the false claim that nearly all crimes affected national security.