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War Powers Act
As commander in chief of the armed forces
True
The advantage of getting congressional approval is that you will have political goodwill, the disadvantage is it might take long to get the approval.
Presidents do not need the approval to send troops anywhere in the world. However, generally the president attempts to have a consensus with Congress when sending troops somewhere.
executive agreement
An executive agreement is an example of an action that does not require congressional approval. It is an agreement by heads of government, and is less formal than a treaty.
Without congressional approval
The President has unfettered, exclusive power to remove his appointees without approval from the legislature. This power is restricted to those whose positions are units of, and subordinate to, the executive department.
Without congressional approval
The President does have the power to veto Congressional legislation that comes to him for approval. However, Congress has the ability to override his veto with two thirds of the Congress.
Congressional Approval