I didn’t evade the question. I’ve answered it, twice. And I’m not talking about destroying the separation of powers. I just recognize that there are certain powers that are held by each branch, and that among the powers that are held by the Executive branch is the power to negotiate Federal contracts. Separation of powers doesn’t mean that the Executive branch has no power.
You and I agree that the Federal government is way too big, and that as a result, there are way too many Federal contracts. All I am saying is that, within the limited universe of Federal contracts (which, again, should be much, much MORE limited than it is now), the President has authority to negotiate the terms of said contracts (subject, of course, to restrictions imposed by law).
That’s three times you evaded the question. Where does the President have any such authority?