In practice the Fed is not independent and Trump can use the Treasury to counter the FOMC’s actions.
Trump already fired a warning shot across their bow a month or two ago.
And the Fed ignored that warning shot, and went merrily ahead with another hike, and promised 4 more before end of 2019. Even after that interest rates will still be below the average of last 60 years.
Interest rates are lagging indicators of economic performance.