congress
The U.S. Constitution is most detailed in explaining the duties and powers of the three branches of government: the legislative, executive, and judicial branches. Article I outlines the responsibilities of Congress, including lawmaking, taxation, and regulating commerce. Article II specifies the powers of the President, such as enforcing laws and conducting foreign policy. Article III establishes the judicial system, detailing the role of the Supreme Court and federal courts in interpreting laws and administering justice.
xl
The Second Article (Article II ) gives this information.
The Constitution most explicitly details the duties of the executive branch in Article II. This article outlines the powers and responsibilities of the President, including serving as the Commander in Chief of the armed forces, executing federal laws, conducting foreign policy, and appointing federal officials. Additionally, it establishes the process for presidential elections and the mechanisms for impeachment. These provisions collectively define the scope and limits of executive authority in the U.S. government.
fundemental duties are derived from Russian constitution
The duties of congress were assigned by the Constitution. Article I one of the Constitution describes the specific powers of congress.
Preambulum.
judges if laws and acts of the legislative and executive branches are constitutional
State constitutions.
The duties and structure of the executive branch of government are found in the US Constitution. More specifically they are defined in Article 2 of the Constitution.