Updated on Jan. 26 at 1 p.m. ET

Hours after he was sworn in Wednesday, the U.S. Senate began confirming President Biden's nominees for key positions in his administration.

That's a slower pace than for recent administrations. Former President Donald Trump had two Cabinet members confirmed by Inauguration Day in 2017, while former President Barack Obama had six by the time he took the oath of office.

Biden has announced acting officials to temporarily lead federal agencies.

For permanent roles, here's who Biden has chosen for national security, economic policy, and additional Cabinet positions and a range of other posts — including his top White House advisers.

National security

Biden has chosen officials to oversee U.S. intelligence and defense, and spearhead relations with world leaders and international coalitions. All of these officials must be confirmed by the Senate.

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Economic policy

As the U.S. continues to fight through a recession brought on by the coronavirus pandemic, Biden has made picks to lead his economic, financial and trade policy. These positions must be confirmed by the Senate.

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Additional members of Biden's Cabinet

Biden will overhaul departments to remove President Trump's appointees and nominate officials to carry out his policy agenda. These officials require Senate confirmation.

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Other nominees

These officials will work on Biden's push to roll back Trump administration policies on immigration and climate as well as help with the coronavirus response. Many of these officials for key agencies must also receive Senate confirmation.

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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.