FILE - In this July 28, 2016 file photo, LGBT rights activist Sarah McBride speaks as Rep. Sean Patrick Maloney, D-NY, Co-Chair of the Congressional LGBT Equality Caucus listens during the final day of the Democratic National Convention in Philadelphia. Former vice president Joe Biden is writing the foreword to a memoir by transgender activist McBride, who made history when she addressed the Democratic National Convention last year. (AP Photo/J. Scott Applewhite, File)

NEW YORK - Former Vice-President Joe Biden is writing the foreword to a memoir by transgender activist Sarah McBride, who made history when she addressed the Democratic National Convention last year.

McBride is now national press secretary for the Human Rights Campaign, a leading LGBT-rights organization. Her book, scheduled to be published in March by Crown Archetype, is titled "Tomorrow Will Be Different: Love, Loss, and the Fight for Trans Equality."

McBride, 27, first made headlines in 2012 when, at the end of her term as student body president at American University, she came out publicly as transgender in the student newspaper.

She went on to serve as an intern in the White House that year, the first openly transgender woman to do so. After graduating from college, she helped lead a successful effort to pass gender identity nondiscrimination protections in her home state of Delaware.

In 2016, she became the first openly transgender person to speak at one of the major political parties' national conventions.

During her White House internship, McBride met and fell in love with Andrew Cray, a transgender man and fellow activist. Cray was diagnosed with terminal cancer in 2014 and died just a few days after they married.

In her speech to the Democratic Convention, she evoked her love of Cray.

"Will we be a nation where there's only one way to love, one way to look, one way to live?" she asked. "Or will we be a nation where everyone has the freedom to live openly and equally?"

Biden, who represented Delaware in Congress for many years, writes in the draft version of his foreword that transgender equality is "the civil rights issue of our time."

"It's about freeing the soul of America from the constraints of bigotry, hate, and fear, and opening people's hearts and minds to what binds us all together," he writes. "And that's what makes Sarah's book so powerful."

McBride's political activism began as a high school student in Delaware. In 2010, she worked for the election campaign of Biden's son, Beau, when he was the state's attorney general. Beau Biden died in 2015.

News from © The Associated Press, 2017