All he needs is one third of Congress to sustain his vetoes, and the bully pulpit of the presidency can be useful in that respect.
President Andrew Jackson is reputed to have said, when the US Supreme Court had ruled that Georgia stole Cherokee lands, "they have made their decision, now let them enforce it."
Suppose that instead of that attitude being applied by a corrupt, venal, racist Democrat, it was applied on behalf of greater liberty and prosperity of the American people?
Suppose he appointed a pro-gun FBI Director? Suppose he exercised his executive power to rein in and punish executive-branch agencies,
such as the BATFE, which exceed their authority and violate the Second Amendment while harassing legitimate businesses? Or the IRS?
FEMA was created by an executive order (12148), did you know that? It could likewise be abolished, and it would take a two-thirds majority of Congress to overturn it.
Or consider Executive Order 11110, for that matter, ordering that the Treasury have the power to bypass the Federal Reserve Banking system and issue United States Notes backed by silver bullion in possession of the Treasury.