In the early weeks of President Biden's administration, his aides are beginning to put policy into action, while the U.S. Senate is taking up his nominees.

The top figures in an administration are made up of a combination of Cabinet and high-ranking nominees who require Senate confirmation, and key advisers tapped by the president, who don't require congressional approval.

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Below, see who Biden's chosen for:

Note that Biden's original nominee to head the Office of Management and Budget, Neera Tanden, withdrew from consideration on March 2.

National security: These officials would oversee U.S. intelligence and defense, and spearhead relations with world leaders and international coalitions.

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Economic policy: As the U.S. economy remains battered by the coronavirus pandemic, these picks would direct Biden's economic and trade policies, and the government's financial oversight.

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Additional members of Biden's Cabinet: These nominees, who all require Senate confirmation, would help carry out Biden's policy agenda on issues ranging from health care to climate change.

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Other key positions: These top roles include officials who would help in the federal response to the coronavirus pandemic.

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White House: These are the top aides who Biden will count on to run his White House and advise him on top policy initiatives. Most do not need confirmation by the U.S. Senate.

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This page was originally published on Nov. 17 at 11:49 a.m. ET.

Copyright 2021 NPR. To see more, visit https://www.npr.org.

Correction

An earlier version of this story incorrectly indicated that the CDC director position requires Senate confirmation. It does not.