“But, under the Constitution, Trump has the power to supplant the function of the FED with the creation of sovereign money.”
No, only Congress has the power to coin money under the Constitution.
Then monies allocated by Congress could be released as "Treasury Notes" rather than "Federal Reserve Notes" with no interest required.
The problem becomes to not over-issue the lubricant (paper bills are essentially devices that allow us to "make change for a chicken") causing inflation.
We could possibly use some the prices of certain desirable metals as a standard.
Nah, never work.