The Historic Firsts in President Joe Biden's Administration

In addition to choosing "a Cabinet of barrier breakers, a Cabinet of firsts," Joe Biden is making history as well. At 78 years old, he is the oldest U.S. president to take the Oath of Office.

Harris is the first female, Black American and South Asian American to be elected Vice President in the history of the United States.

Biden and Harris have announced that they will have an all-female communications team – another first for their administration.

Kate Bedingfield will serve as Biden's communications director, Jen Psaki will serve as his press secretary, and the rest of the team includes Pili Tobar, Karine Jean-Pierre, Symone Sanders, Ashley Etienne and Elizabeth Alexander.

Biden will be the first First Lady to keep her job. Biden is an English professor at Northern Virginia Community College, a position she held while her husband was the Vice President as well.

Kamala Harris' husband, Doug Emhoff – whom she married in 2014 after meeting on a blind date the year before – will be the first man to step into the role of "Second Gentleman."

If confirmed, the former presidential hopeful would make history by becoming the first publicly-out LGBTQ Cabinet secretary approved by the Senate. Biden has tapped him to serve as secretary of transportation.

Buttigieg is also the youngest member of Biden's Cabinet thus far and the only one of Biden's former opponents from the 2020 presidential election to be nominated.

Adeyemo has been chosen by Biden to become deputy secretary of the Treasury. If confirmed, he will be the first Black person to serve in the role.

He has previously served during the Obama administration Obama's senior international economic adviser, deputy national security adviser, deputy director of the National Economic Council and the first chief of staff of the Consumer Financial Protection Bureau. He was also previously senior advisor and deputy chief of staff at the Department of the Treasury.

The retired four-star general has been nominated by President Biden to serve as the secretary of Defense. If confirmed, Austin will be the first African American to take on the role.

Becerra made history as California's first Latino Attorney General, and if confirmed, he would become the first Latino to lead the Department of Health and Human Services.

Elizondo, who served as a special assistant to President Obama and social secretary to the Bidens throughout the Obama administration, is the first Hispanic American to be appointed White House social secretary.

President Biden has nominated New Mexico Congresswoman Deb Haaland to serve as interior secretary. If confirmed, Haaland will be the first Native American to serve in the role (or indeed, in any cabinet position).

Biden selected Haines, who served as the first female deputy director of the Central Intelligence Agency from 2013-2015, to be director of national intelligence. If confirmed, she will be the first woman to serve in this role.

Hicks, a defense expert and academic who previously served as principal deputy under secretary of defense for policy in the Obama administration, would be the first Senate-confirmed woman to serve as deputy defense secretary.

Biden has selected Mayorkas to serve as secretary of Homeland Security. If confirmed, Mayorka – who was born in Havana, Cuba – will be the first Latino and first immigrant to serve in this role.

He previously served as the deputy secretary of the U.S. Department of Homeland Security and director of U.S. Citizenship and Immigration Services under President Obama.

If confirmed, Regan would be the first Black man to lead the United States Environmental Protection Agency. He would be the second Black person to serve in the role, the first being Lisa Jackson during the Obama administration.

Yellen, who made history as the first woman to chair the Federal Reserve from 2014 to 2018, would make history again (if confirmed by Senate) by serving as Treasury secretary.

Current President and CEO of the Center for American Progress Neera Tanden has been nominated by Biden to serve as director of the Office of Management and Budget. If confirmed, she will be the first woman of color and first South Asian American to serve in the role.

Biden has nominated Katherine Tai to serve as U.S. trade representative. If confirmed by the Senate, Tai will be the first woman of color to serve in the role.

Rouse has been nominated to serve as chair of the Council of Economic Advisors. If confirmed, she will be the first African American to serve in the role and the fourth woman. She is currently the dean of the Princeton School of Public and Internal Affairs.

Biden announced that he will nominate Rachel Levine as his assistant secretary of health. If her nomination is approved, Levine, who is Pennsylvania's secretary of health, will become the first openly transgender federal official to be confirmed by the United States Senate.

Biden's German shepherd, Major (right), will also make history as the first rescue dog to live at 1600 Pennsylvania Avenue.

The Biden family adopted Major from the Delaware Humane Association in November 2018, 10 years after the couple welcomed their first German shepherd, Champ (left).

The Delaware Humane Association and Pumpkin Pet Insurance hosted an "indoguration" for Major, which raised more than $200,000 for DHA.