Again there are politics to be considered. We are not a monarchy or dictatorship in which the head of state can do whatever he or she wants with impunity.We are not helpless.
When the President of the United States is unable to enforce Federal Law then he can declare a jurisdiction to be in rebellion.
But it is not necessary to take it that far.
All he needs to do is to have US Marshals arrest such officials and charge them appropriately and declare their positions vacant.
What do we gain if we do what needs to be done but in the process lose the hearts and minds of the people so that in the next election the people who approve and encourage lawlessness are back in power? We lose the Congress and the White House next and those who intend to make the USA as totalitarian state have full license to move us in that direction?
To move faster than the will of the people might win the battle, but will always lose us the war.