Congress overlooks the powers of all branches of the government including the President of the United State in the Executive Branch and the Supreme Court Justices in the judicial branch.
Answer
The Congress exercises this power largely through its congressional committee system.The Congress's oversight authority derives from its powers in the Constitution, public laws, and House and Senate rules
Explanation
Oversight refers to the review, monitoring, and supervision of federal agencies, programs, activities, and policy implementation. Over-sighting is done by the United States Congress of the Executive Branch, including the numerous U.S. federal agencies. The importance and the purposes of oversight is Streamlining committee structures or responsibilities would reduce this negative aspect of oversight. Congressional oversight has an important positive role, especially regarding intelligence, but one that a change to committees would do little to enhance. This is done through the process of check and balances which is the principle of the government under which separate branches which are the executive, the judiciary and legislative are empowered to limit the powers of each other. In this way it prevents oe of the branches to be more powerful than others.