Where is the word ‘oversight’ in the Constitution? Each branch has separate powers that create the checks and balances needed but the President does not have to answer to the Congress of the Court in regards to exercising power that the Constitution specifies as power granted to him. The Constitution grants the power of Commander in Chief to the President. Do you think he should have to gain permission to defend this nation from a foreign enemy? Do you think that it is a committee of commanders that the Constitution calls for?
Every President since Washington has exercised their power as Commander in Chief without regard of permission of oversight from Congress. Congress can though of course try to ‘check’ the power of the President through means of impeachment or other means if they feel that a President is abusing his power.
It is an implied power and in your somewhat defense not enumerated but has been granted by using various laws, House Rules and the US Constitution itself such as Article I, section 8, clause 18. Also backed up by several USSC rulings saying “”the power of inquiry – with process to enforce it – is an essential and appropriate auxiliary to the legislative function.” McGrain v. Daugherty
In the founders case, backed up by common sense (Implied) because since Congress is in charge of appropriating funds, enacting laws, raise and support armies, provide for a Navy, declare war, impeach and remove from office the President, Vice President, and other civil officers etc...Congress would need to know how programs were being administered, by whom, at what cost, whether officials were obeying the law and complying with legislative intent. Of course common sense is not common which is why we have a collectivist named Obama being named Commander in Chief.