Consider that most totalitarian states have constitutions that explicitly forbid torture, discrimination, and many other forms of government suppression of people. This does little in the face of a police state bent on suppressing the people.
The lines have definitely blurred a lot, especially since the early 1900's. And that's just between the branches, let alone the growth of govt in general.
Examples? The activist judges thing I can see, but I'm not so sure I'm concerned of a body with more singular authority (the president) delegating to a body with more democratic accountability and representation (congress), nor can I easily find any examples of it.
Can you expand? The Constitution gave the Executive powers that were then transferred to Congress and are now performed by the Federal Reserve?
So, if the president gave up his power to conduct monetary policy. Than good! But then that doesn't seem to correlate with Congress giving up their power so that they don't have to make unpopular votes and risk losing elections.
Securities and Exchange Commission (SEC): As an independent regulatory commission, it oversees markets, yet some proponents of a unitary executive argue it should be subject to White House control.
Federal Deposit Insurance Corporation (FDIC): A regulatory agency that, along with the Fed, has been subject to executive orders aiming to tighten oversight.
Consumer Product Safety Commission (CPSC): An independent agency that issues regulations and recalls, often cited in discussions regarding the scope of executive authority.
Can you give any example of the opposite? A case where the executive has delegated power to the legislative or judicial branches?
Maybe we have a misunderstanding. I'm not asking a kind of broad speculative question like "hypothetically, what could a hardcore monarchist say to critique our constitutional system?"
I was asking for a plain old real-world example of delegation of power from the executive branch to another branch. In the real history of the USA. Agreed on one point, though: I can't think of one either.
The Constitution created SCOTUS as a political body.
The sole role of a Supreme Court Justice is to cast votes.
The constitution places zero restrictions on how a Justice decides which way to vote. The Justice is not bound by anything in deciding how to vote.
That includes bribery or other corruption. If bribery is proven, the Justice is subject to criminal prosecution. But conviction does not remove the Justice from office. And removal by impeachment does not undo the cases decided by the corrupt votes of the Justice.
Every vote of every Justice in US history was an "activist judicial practice" in the sense that each vote was made for personal reasons of the Justice that we will never know (opinions only reflect what a Justice chose to say, which in no way means it reflects the personal reasons for the Justice's vote).
Your comment is a political statement about a political body - although you seem to incorrectly believe you are making some type of legal statement.
The Constitution is designed such that it defines no rules and places no restrictions upon how Justices are to interpret the Constitution. The original design of the Constitution is that the Justices are to interpret the laws of the United States as they see fit.
There is no such thing as an "activist" Supreme Court.
The suggestion there must be an "Originalist interpretation" of the Constitution (e.g. it must be interpreted as intended by the Founding Fathers) is pure hogwash. If that were so, then by an "Originalist interpretation" the Constitution would already say so (and of course it doesn't). Nevertheless political conservative Justices actually made that part of their opinions that now impose the concept of "originalism" when interpretating the Constitution. A pretty neat magical trick by which the conservative Justices violate the philosophy of "originalism" to impose "originalism".
And as for "further down the line at the district level", there is likewise no such thing as an "activist" court - in the sense that lower courts, unlike SCOTUS, are constrained by the Constitution and statutes passed by Congress. There cannot be "activist" district courts to the extent that if they overstep their bounds, SCOTUS will be called upon to address it.
The phrase "activist court" is nothing more than a fictional invention of The Federalist Society. If there are actual politics being played in SCOTUS (this time I mean Republican vs Democrat), it is the Republicans through The Federalist Society and appointments to SCOTUS of Federalist Society Members. But now I am chasing down a rabbit hole that is best avoided.
This would be enforced how?
Bingo. The flaw in the constitution. The Executive holds the only enforcement mechanism in government: the FBI, military and other police forces.
Having majored in political science as an undergrad and then being a trial attorney for 40+ years, I would argue that my use of the word 'flaw' is probably misplaced. 'Flaw' implies it could (should) have been created differently.
Alas, I am unaware of ever reading a workable way to 'fix' our constitutional 'flaw'.