Melania Trump Melania TrumpTrump privately blamed Black Americans for lacking initiative: report The Hill's 12:30 Report: Ginsburg lies in repose Melania Trump: Ginsburg's 'spirit will live on in all she has inspired' MORE is celebrating a birthday — the one-year anniversary of "Be Best" — saying she's expanding the mission of her wide-ranging campaign.

"As I said at my campaign launch a year ago, I'm here with one goal: which is for children to reach their full potential so they can grow up happy, healthy and contribute positively to society and the world," Trump said in a Tuesday ceremony in the White House Rose Garden — the same place where she first kicked off the initiative last May.

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"With that goal always in mind, we must continue our work to do what we can to affect positive change for our children," the first lady continued, as President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE looked on from the audience.

When first revealing Be Best, Melania Trump said it would feature a trio of hot-button issues involving children: social media use, well-being and opioid abuse. At the anniversary gathering, she announced that she was widening those three pillars.

"My office has spent the past year listening to and learning from children, parents, medical professionals, teachers, leaders in technology and social media," Trump, 49, said.

"In fact, this past year has shown me that children are vulnerable to more than just social media, and so I expanded one of my pillars to online safety." Trump also said the campaign would extend its work on opioid abuse to "include kids of all ages."

The former model also announced an appointment made earlier this year.

"For the first time in history, the United States Agency for International Development has appointed a Be Best ambassador," Trump told the crowd. Julie Cram was appointed in March, according to the first lady, as she pushed for other agencies to make similar moves.

"On this one-year anniversary of my initiative, I call on all of our partner agencies to appoint a Be Best ambassador to serve as a liaison between my office and their respective agency to better highlight and promote the programs and services offered to parents and children on behalf of the U.S. government."

Trump unveiled her long-awaited Be Best initiative last spring. But from the get-go, critics pounced on some elements of the campaign. Detractors mocked one of "Be Best's" areas of focus: social media and cyberbullying, pointing to the president's regular use of Twitter to launch verbal attacks on his political opponents.

After listing her travels and experiences over the last year with Be Best, including a solo trip last year to Africa, Trump revealed she planned to make another international visit later this year.

"We plan to travel this fall," Trump said, "and I'm very much looking forward to it."

Trump was joined by three speakers at Tuesday's ceremony, National Institutes of Health Director Dr. Francis Collins, Microsoft's Toni Townes-Whitley, and TV anchor and anti-opioid abuse advocate and former Fox News personality Eric Bolling. Bolling heaped praise on Trump, saying, "When the history books are written, there should be a special chapter reserved for our first lady."

Trump, Bolling said, is "the most important and accomplished first lady in American history. Full stop."

Also among those eyed at the event: Vice President Pence, Treasury Secretary Steven Mnuchin Steven Terner MnuchinHillicon Valley: DOJ proposes tech liability shield reform to Congress | Treasury sanctions individuals, groups tied to Russian malign influence activities | House Republican introduces bill to set standards for self-driving cars Treasury: Trump's payroll tax deferral won't hurt Social Security Treasury sanctions individuals, groups tied to Russian malign influence activities MORE, White House adviser Kellyanne Conway Kellyanne Elizabeth ConwaySpecial counsel investigating DeVos for potential Hatch Act violation: report George and Kellyanne Conway honor Ginsburg Trump carries on with rally, unaware of Ginsburg's death MORE, Labor Secretary Alexander Acosta Alex Alexander AcostaFederal litigator files complaint alleging Labor secretary abused his authority Appeals court to review legality of Epstein plea deal Appeals court finds prosecutors' secret plea agreement with Epstein didn't break law MORE, Transportation Secretary Elaine Chao Elaine Lan ChaoChick-fil-A drops fight for San Antonio airport location Overnight Defense: US marks 19th anniversary of 9/11 attacks | Trump awards Medal of Honor to Army Ranger for hostage rescue mission | Bahrain, Israel normalizing diplomatic ties Trump marks 9/11 with moment of silence on Air Force One, remarks in PA MORE and Health and Human Services Secretary Alex Azar.