Actually, their responsibility is to uphold "the law", not your idea of what justice should be.
If your ability to reason were not also obliterated, you could read the US Constitution and learn that the executive branch is not bound to legislative statutes:
Before he enter on the Execution of his Office, he shall take the following Oath or Affirmation:--"I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States."
...the law of the land, mentioned in Magna Carta, was the common, ancient, fundamental law of the land, which the kings were bound by oath to observe; and that it did not include any statutes or laws enacted by the king himself, the legislative power of the nation.--Lysander Spooner from Trial by Jury
But the only hope Americans like yourself have of ever learning to love your neighbors as yourselves, is if you are scared into it, the same way you were frightened into trading a free republic for the false security of an authoritarian socialist police state where you think you have to obey every dictate of every two bit legislator. Perhaps your thoughtless emotions will save you then, when a libertarian evangelist addresses your basic instincts of fear and greed, and causes you to repent for your crimes against your neighbors--even if only to save your own behind from eternal physical torment.