Final answer:
Congress has several oversight powers in respect to the presidential power of appointment, including the ability to reject cabinet level nominees and treaties signed by the president. Congress can also pass legislation that affects or limits the president's power of appointment.
Step-by-step explanation:
Congress has several oversight powers in respect to the presidential power of appointment. One power is that the Senate may reject cabinet level nominees. This means that if the president appoints someone to a cabinet-level position, the Senate has the power to vote against their confirmation. Another oversight power is that the Senate may reject treaties signed by the president. This means that if the president negotiates a treaty with a foreign government, the Senate has the power to vote against its ratification. Additionally, Congress has the power to pass legislation that may affect or limit the president's power of appointment. For example, Congress may introduce laws that create new requirements or qualifications for presidential appointees.