Sure, the executive has constitutional powers, but the powers used in this WeChat ban come from the National Emergency act and the International Economic Emerge

Sure, the executive has constitutional powers, but the powers used in this WeChat ban come from the National Emergency act and the International Economic Emergency Powers Act, not the constitution. So I think the misunderstanding comes from the fact that you’re talking about constitutional powers, which are not at issue here. Powers created by legislation are constrained by the statutes themselves and Administrative Procedure Act requirements.