Administration implies bureaucracy - separation of powers, the rule of law, formal procedures, dispassionately executing a job, etc. What we have at the moment is a regime.

Debatable since they really wanted to prosecute the guy and still failed to. We're not completely bereft of the separations yet.

But those labels are generally directed at the executive branch (the $President administration). Their failure was due to checks in the judicial branch. So we have a regime in the executive, but still have a somewhat functioning judiciary (despite the related push to further rot it from the top down).