how does congress check & provide oversight of the executive branch
Congressional oversight Congressional oversight is oversight by the United States Congress over the Executive Branch, including the numerous U.S. federal agencies. Congressional oversight includes the review, monitoring, and supervision of federal agencies, programs, activities, and policy implementation.[1] Congress exercises this power largely through its congressional committee system. Oversight also occurs in a wide variety of congressional activities and contexts. These include authorization, appropriations, investigative, and legislative hearings by standing committees; specialized investigations by select committees; and reviews and studies by congressional support agencies and staff.
Powers of the President of the United States The Separation of Powers devised by the founding fathers was designed to do one primary thing: to prevent the majority from ruling with an iron fist. Based on their experience, the framers shied away from giving any branch of the new government too much power. The separation of powers provides a system of shared power known as "checks and balances". For example, the President appoints judges and departmental secretaries, but these appointments must be approved by the Senate. The president can veto bills, or deny them. If he does that, the bill is sent back to Congress.