Bob, you've been arguing that even if the SCOTUS rules a law unconstitutional (and therefore of no force and effect), that the executive branch MUST still try to enforce it if they believe that said decision is wrong.
That interpretation would give the executive branch the ability to detain someone arbitrarily, and to keep them in detention even if a court rules that they are not guilty because said official feels their duty is to keep that prisoner detained because in the opinion of that official that person was in contravention of the (invalid) law.
Congratulations, you've just argued your way into a dictatorship.