WASHINGTON — President-elect Donald Trump said Saturday that he will nominate former White House aide Brooke Rollins to be his agriculture secretary, the last of his picks to lead executive agencies and another choice from within his established circle of advisers and allies.

The nomination must be confirmed by the Senate, which will be controlled by Republicans when Trump takes office Jan. 20, 2025. Rollins would succeed Tom Vilsack, President Joe Biden’s agriculture secretary who oversees the sprawling agency that controls policies, regulations and aid programs related to farming, forestry, ranching, food quality and nutrition.

Rollins, who graduated from Texas A&M University with a degree in agricultural development, is a longtime Trump associate who served as his former domestic policy chief. She is president and CEO of the America First Policy Institute, a group helping to lay the groundwork for a second Trump administration.

Rollins, 52, previously served as an aide to former Texas Gov. Rick Perry and ran a think tank, the Texas Public Policy Foundation.

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Completing the Cabinet

Rollins’ pick completes Trump’s selection of the heads of executive branch departments, just two and a half weeks after the former president won the White House once again. Several other picks that are traditionally Cabinet-level remain, including U.S. Trade Representative and head of the small business administration.

Trump didn’t offer many specifics about his agriculture policies during the campaign, but farmers could be affected if he carries out his pledge to impose widespread tariffs. During the first Trump administration, countries like China responded to Trump’s tariffs by imposing retaliatory tariffs on U.S. exports like the corn and soybeans routinely sold overseas. Trump countered by offering massive multibillion-dollar aid to farmers to help them weather the trade war.

USDA’s Broad Responsibilities

President Abraham Lincoln founded the USDA in 1862, when about half of all Americans lived on farms. The USDA oversees multiple support programs for farmers; animal and plant health; and the safety of meat, poultry and eggs that anchor the nation’s food supply. Its federal nutrition programs provide food to low-income people, pregnant women and young children. And the agency sets standards for school meals.

Robert F. Kennedy Jr., Trump’s nominee to lead the Department of Health and Human Services, has vowed to strip ultraprocessed foods from school lunches and to stop allowing Supplemental Nutrition Assistance Program beneficiaries from using food stamps to buy soda, candy or other so-called junk foods. But it would be the USDA, not HHS, that would be responsible for enacting those changes.

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Upcoming Dietary Guidelines

In addition, HHS and USDA will work together to finalize the 2025-2030 edition of the Dietary Guidelines for Americans. They are due late next year, with guidance for healthy diets and standards for federal nutrition programs.