Ignoring judicial decisions has consequences such as contempt of court. If a judge decides to fine the president for not implementing the judge’s wishes, things get messy as the U.S. Marshals Service is an executive branch agency which enforces court orders. The sitting president might order the the marshals ignore the court’s order, but what happens when he leaves office? Ultimately, Congress has a role to play in limiting the jurisdiction of the federal courts to interfere in the executive branch decisions. That doesn’t happen because Congress likes the ability to join with the courts to check the executive branch. When the public is sufficiently outraged, Congress will vote to limit judicial oversight of the executive branch.
I would argue that the little judges who are trying to give Trump a hard time are in contempt of the US Supreme Court:
The Supreme Court’s decision in Mississippi v. Johnson reinforced the separation of powers by affirming that the judiciary could not enjoin the President from performing his executive duties, particularly those involving discretion. This case set a precedent for the immunity of the President from judicial injunctions concerning discretionary actions. Mississippi v. Johnson, 71 U.S. 475, 18 L. Ed. 437, 4 Wall. 475, 1866 U.S. LEXIS 897
I would like to see the little judges charged.
The courts are toothless by design.