What other branch of government checks the president's appointment powers?

The President has the power to appoint Supreme Court justices, ambassadors and other government officials. After the President appoints individuals, the Senate must confirm them. Under Article II, Section 2 of the Constitution: "The President ... shall have power, by and with the consent of the Senate, to make treaties, provided two thirds of the Senators present concur; and he shall nominate, and, by and with the advice and consent of the Senate, shall appoint ambassadors

So i think its the senate

Explanation:

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just have a great um day