Final answer:
The regulations ultimately issued when Congress passes a statute with language directing the Secretary to prescribe necessary regulations are known as delegated regulations, which are granted under the authority of the Executive branch and carry the force of law.
Step-by-step explanation:
When Congress passes a statute with language such as, The Secretary shall prescribe such regulations as he may deem necessary, the regulations ultimately issued for that statute are considered delegated regulations. These types of regulations are given to administrative agencies which explain or enforce a statute, under the authority that comes through the Executive branch of government.
Delegated regulations are one of several types of administrative regulations that include legislative regulations, interpretive regulations, and procedural regulations. However, the key distinction of delegated regulations is that they carry the force of law as long as they are made within the scope of the authority granted by Congress.