Question: Katzenbach v. Morgan and Medellín v. Texas, have which government organization in common?

Context paragraphs:
Katzenbach v. McClung: Katzenbach v. McClung, 379 U.S. 294 (1964), is a United States Supreme Court case in which the Court unanimously held that Congress acted within its power under the Commerce Clause of the United States Constitution in forbidding racial discrimination in restaurants as this was a burden to interstate commerce.

President's Organization for Unemployment Relief: The President's Organization for Unemployment Relief (originally known as the President's Emergency Committee for Employment) was a government organization created on August 19, 1931 by United States President Herbert Hoover.  Its commission was to help U.S. citizens who lost their jobs due to the Great Depression.  Its purpose was to coordinate local welfare agencies, without spending government money.  The program ended on June 30, 1932.  Its ending was because the government was not willing to help the agencies through the aid of money and this therefore led to them becoming simply overwhelmed by the magnitude of the problem of the Great Depression.

Attached organization: In Japan, an attached organization (特別の機関 , Tokubetsu no kikan , literally, a "special organization") is an organization in the Japanese government that is attached to the Cabinet Office, ministries or their Government agency and is established for some specific purpose.  It is distinguished from an affiliated institution.  The classification was created when the amendments to the National Government Organization Law were promulgated on July 1, 1984.  The amendments, in particular, made it clear that the National Police Agency is an organization attached to the National Public Safety Commission, which belongs to the Cabinet Office.

Hajj and Pilgrimage Organization (Iran): Hajj and Pilgrimage Organization (Persian: سازمان حج و زیارت‎ ‎ ) of Iran was founded on 1979 and before that Hajj was managed by Ministry of Interior.  In Iran, this organization is subset of Ministry of Culture and Islamic Guidance.  Also, the Hajj and Pilgrimage Organization is government organization and goals determine with Iran's policies, thoughts of Ruhollah Khomeini, guidelines of the Supreme Leader, and president.

Secret service: A secret service is a government agency, intelligence agency, or the activities of a government agency, concerned with the gathering of intelligence data.  The tasks and powers of a secret service can vary greatly from one country to another.  For instance, a country may establish a secret service which has some policing powers (such as surveillance) but not others.  The powers and duties of a government organization may be partly secret and partly not.  The organization may be said to operate openly at home and secretly abroad, or vice versa.  Secret police and intelligence agencies can usually be considered secret services.

Katzenbach v. Morgan: Katzenbach v. Morgan, 384 U.S. 641 (1966) , was a United States Supreme Court case regarding the power of Congress, pursuant to Section 5 of the 14th Amendment, to enact laws that enforce and interpret provisions of the Constitution.

Institute of Architects Bangladesh: The Institute of Architects Bangladesh (IAB) (Bengali: বাংলাদেশ স্থপতি ইন্‌স্‌টিটিউট "Bānglādēsh Sthāpāti Institute" ) is a professional organization for architects in Bangladesh.  Architect Muzharul Islam was its founder president.  The IAB works with different government organization & offers education, government advocacy to improve the quality of architecture profession in Bangladesh.

Affiliated institution: In Japan, an affiliated institution (施設等機関 , shisetsutō kikan , literally, an institution etc. organization) , also called a facility, is a collective term for organizations such as test and research agencies or training schools that are under the controls of the Cabinet Office or other governmental organizations established due to Article 3 Clause 2 of the National Government Organization Law.  It is distinguished from an attached organization.  The classification was created on 1 July 1985 when an amendment to the National Government Organization Law was put into effect

Royal Commission on Government Organization: The Royal Commission on Government Organization (also known as the Glassco Commission) was a Canadian Royal Commission appointed in 1960 to inquire into the organization of the Government of Canada.  Chaired by businessman J. Grant Glassco, it issued a five volume report in 1962 and 1963 recommending that government departments be managed on a decentralized basis, that the Treasury Board be reorganized, and that senior management should rotate between departments.

Medellín v. Texas: Medellín v. Texas, 552 U.S. 491 (2008) , is a United States Supreme Court decision that held that even if an international treaty may constitute an international commitment, it is not binding domestic law unless Congress has enacted statutes implementing it or unless the treaty itself is "self-executing."  Also, the Court held that decisions of the International Court of Justice are not binding domestic law and that, without authority from the United States Congress or the Constitution, the President of the United States lacks the power to enforce international treaties or decisions of the International Court of Justice.

Supporting paragraphs: Katzenbach v. Morgan Medellín v. Texas
Answer: United States Supreme Court