Surely all this posturing is pointless
What does the law say about it? Is there a law in the US requiring Apple to put a backdoor in their phones? No? Then the government should be working with Congress to put such a law in place.
If Congress disagrees? The govt is out of luck, and should move on. Dragging Apple's name through the mud over it doesn't change the law. All it'd actually do is end up with Apple taking the govt to court due to them being lied about by the AG.