A Look at Trump's Cabinet Picks

One of the top priorities in the transition process is to staff the incoming president's administration.

Trump has already announced several Cabinet picks and others whose positions are Cabinet-level, with more expected to come in the days and weeks ahead.

All Cabinet-level appointments need to be confirmed by the Senate before they are officially appointed.

Here is the growing list of Cabinet picks:

Attorney General

Sen. Jeff Sessions, R-Ala. - Offer announced on Nov. 18

Bill Clark/CQ Roll Call/Getty Images

Sen. Jeff Sessions, R-Ala., gets off the Senate subway as he arrives for the Senate Republicans' policy lunch, Jan. 27, 2016 in Washington.more +

Sessions, the senator from Alabama who is currently in his fourth term, has been a longtime Trump supporter who campaigned with him throughout the election. Click here to learn more about Sessions.

Education Secretary

Betsy DeVos - Offer announced on Nov. 23

Carolyn Kaster/AP Photo

President-elect Donald Trump and Betsy DeVos pose for photographs at Trump National Golf Club Bedminster clubhouse in Bedminster, New Jersey, Nov. 19, 2016.more +

DeVos, a Michigan education activist and major GOP donor, is an advocate for school choice and charter schools, and has drawn criticism in conservative circles for being associated with groups that support Common Core. Click here for more information about DeVos.

Secretary of Health and Human Services

Rep. Tom Price - Offer announced on Nov. 28

J. Scott Applewhite/AP Photo

House Budget Committee Chairman Tom Price, R-Ga., joined at left by Vice-Chairman Todd Rokita, R-Ind., on Capitol Hill in Washington, March 16, 2016.more +

The Georgia Republican, who met with Trump in New York City earlier this month, is a longtime Obamacare critic and was one of the first House committee chairmen to endorse the presidential candidate. Click here to read more about the selection of Price.

Secretary of Transportation

Elaine Chao - Offer announced Nov. 29

Carolyn Kaster/AP Photo

Former Labor Secretary Elaine Chao arrives at Trump Tower, Nov. 21, 2016, in New York, to meet with President-elect Donald Trump.more +

Chao previously served as labor secretary for former President George W. Bush and was the only Cabinet official to serve through all eight years of his presidency. Click here to learn more about the selection of Chao.

Secretary of Treasury

Steven Mnuchin - Announced Nov. 30

Evan Vucci/AP Photo

Steven Mnuchin, national finance chairman of President-elect Donald Trump's campaign, walks in the lobby of Trump Tower, Nov. 14, 2016, in New York City.more +

Mnuchin worked for 17 years at Goldman Sachs where he served as the chief information officer. He also founded the investment firm Dune Capital Management and the entertainment financing company RatPac-Dune Entertainment. Click here to learn more about the selection of Mnuchin.

Secretary of Commerce

Wilbur Ross - Announced Nov. 30

Dom Emmert/AFP/Getty Images

President-elect Donald Trump meets with Wilbur Ross at the clubhouse of Trump National Golf Club, Nov. 20, 2016 in Bedminster, New Jersey.more +

Ross is a billionaire investor and founder of the investment firm W.L. Ross and Co. Ross has been described as the "King of Bankruptcy" for his work restructuring failed companies, and was a key economic adviser to Trump during his run for the presidency.

Secretary of Defense

Gen. James Mattis (Ret.) - Announced Dec. 1

Bryan Steffy/Getty Images

Retired Marine Corps Gen. James Mattis speaks during the DIRECTV and Operation Gratitude day of service at Caesars Palace, July 23, 2015 in Las Vegas.more +

Mattis retired from the Marine Corps in 2013 following a storied 41-year career that included leading U.S. troops in Afghanistan and Iraq and in Kuwait during the Persian Gulf War. He most recently served as head of U.S. Central Command. In addition to his nomination requiring Senate confirmation, Congress would also have to pass a special law to exempt Mattis from the requirement that commissioned officers be out of active duty at least seven years before serving as defense secretary. Congress passed a measure last week to expedite that process. Learn more about Mattis here.

Secretary of Housing and Urban Development

Dr. Ben Carson – Offer announced Dec. 5

Joe Raedle/Getty Images

Republican presidential candidate Donald Trump shakes hands with former presidential candidate Ben Carson as he receives his endorsement at the Mar-A-Lago Club on March 11, 2016 in Palm Beach, Florida.more +

Carson, a retired neurosurgeon, was once Trump’s rival during the 2016 Republican primaries and now serves as the vice chairman on the Trump transition team. He has never held elected office or worked in government. Click here to learn more about the selection of Carson.

Secretary of Department of Homeland Security

Gen. John Kelly

Manuel Balce Ceneta/AP Photo

In this photo taken Jan. 8, 2016, Gen. John Kelly speaks to reporters during a briefing at the Pentagon.

Kelly is a retired four-star general and the former commander of U.S. Southern Command. In addition to his experience leading troops overseas, he is known for his strong knowledge of border issues and the drug trade in South and Central America. Click here to learn more about the selection of Kelly.

There have been several other high-profile picks for positions considered Cabinet-level:

Chief of Staff

Reince Priebus - Appointed Nov. 13. This is the only Cabinet-level position that does not need Senate confirmation.

Carolyn Kaster/AP Photo

Republican National Committee Chairman Reince Priebus speaks in National Harbor, Md., March 4, 2016.

The selection of Priebus as Trump's chief of staff was the first Cabinet-level announcement. Click here to read more about the Republican National Committee chairman and his role in Trump's campaign.

Ambassador to the United Nations

Gov. Nikki Haley - Offer announced on Nov. 23. This position requires Senate confirmation.

Mandel Ngan/Getty Images

South Carolina Governor Nikki Haley speaks during the 2016 National Lawyers Convention sponsored by the Federalist Society in Washington, Nov. 18, 2016.more +

Haley, the child of Indian immigrants, brings diversity to the nascent administration but has had little international experience as governor of South Carolina. Click here to read more about Haley.

Administrator of Small Business Administration

Linda McMahon - Announced Dec. 7

Bryan R. Smith/AFP/Getty Images

Former Republican Party Senate candidate Linda McMahon speaks to the media at Trump Tower in New York City, Nov. 30, 2016.more +

Linda McMahon is the co-founder and former CEO of WWE, and prior to the announcement was an adviser to global businesses as part of APCO Worldwide's International Advisory Council. McMahon also served on the Connecticut Board of Education and serves on the boards of Sacred Heart University and the Close Up Foundation. She was a top donor to Trump through his campaign. She ran for the U.S. Senate seat in Connecticut in 2010 and 2012, losing both times.

Administrator of Environmental Protection Agency

Scott Pruitt - Announced Dec. 7

Behar Anthony/EPA

Scott Pruitt, Attorney General of Oklahoma, arrives in the lobby of the Trump Tower in New York City, Nov. 28, 2016.

Pruitt is the Oklahoma Attorney General and has been a critic against the EPA. Pruitt's actions largely mirror Trump's own rhetoric on the campaign trail, framing the EPA as an all-too-powerful agency pursuing an ideological agenda based on what he considers dubious science. Click here to learn more about the selection of Pruitt.

And then there were two other early announcements that are senior positions but outside of the Cabinet:

National Security Advisor (non-Cabinet senior position)

Lt. Gen. Michael Flynn (Ret.) - Offer announced Nov. 18

Win McNamee/Getty Images

Defense Intelligence Agency Director Lt. Gen. Michael Flynn speaks at the Intelligence and National Security Alliance's Intelligence Community Summit, Sept. 12, 2013, in Washington.more +

Flynn was a prominent campaign surrogate for Trump throughout the election cycle, often introducing the candidate at rallies and appearing on television in support of Trump. Click hereto read more about Flynn.

CIA Director (non-Cabinet agency position)

Rep. Mike Pompeo, R-Kan. - Offer announced Nov. 18. This position requires Senate confirmation.

Julia Schmalz/Bloomberg via Getty Images

Representative Michael "Mike" Pompeo, a Republican from Kansas, pauses during an interview in Washington, Sept. 20, 2013.more +

Pompeo, who supported Sen. Marco Rubio during the GOP primaries, represents Kansas’ 4th Congressional District. Click here to learn more about Pompeo.

 ABC News