He can't abuse the one without violating the other.
Lincoln waited almost the entire Civil War to deal with slavery that he abhored, until the use of black troops became instrumental in saving the constitutional Union he was sworn to defend. An executive, executes the laws, he doesn't make them by his internal decisions.
Expecting such a position to establish all of God's justice is asking for dictatorship and laying aside the Republic.
Assuming proper civil authority in Florida were to follow their sworn duty and assingments, would you have federal Marshals fire on them?
From defeat should come resolve and reform -- not murder, futile actions and hysteria.
May God bless the Shindlers in this hour of grief.
Amen to all of that.