> The executive shall enforce orders, because it is bound by laws to do so
No? They don't do their job because the law compels them to do (often it doesn't, e.g. the police don't have any positive legal obligation to make arrests or what have you). They do their job because it's their job.
The executive shall enforce orders, because it is bound by laws to do so, which for the executive can only be interpreted by the president?
Sounds like a power grab to me.