Final answer:
Leaders appointed by the president and approved by the Senate include Cabinet members and heads of key agencies like the Federal Reserve, CIA, and IRS.
Step-by-step explanation:
In United States government, leaders who are appointed by the president and also require approval from the Senate are found in several institutional resources. This includes the Cabinet, comprised of the heads of the executive departments, who report to and advise the president. Cabinet appointees are typically from the president's party and reflect a diverse array of backgrounds to represent the American populace. Another group requiring Senate confirmation includes key administrators and heads of agencies such as the Federal Reserve, CIA, and Internal Revenue Service. These individuals play crucial roles in the formation and implementation of government policy.