National security directives set policy and instruct government bodies. They're an exercise of the President's plenary authority to tell the executive branch what to do, not lawmaking. OLC legal interpretations are legal advice, not laws. Federal agencies may rely on those interpretations to take certain actions, but they cannot regulate private conduct. Congressional-executive agreements pertain to controlling trade policy, an area over which Congress and the President have plenary authority to begin with.

Immigration court proceedings are secret, but they're not an exercise of law making. Neither are FISA court opinions, which are interpretations of whether something is legal under the 4th amendment and/or FISA.

Now, you can say it would be great if these things were all public. I happen to agree. But internal directives and policies that are only binding on the government are not "laws." They're not an exercise of the government's power to regulate private conduct. They're an exercise of the government's power to control how government bodies use their discretion.