Chelsea Clinton, the daughter of former president Bill Clinton, on Sunday called LGBT issues “the unfinished business of the 21st century.”

Clinton made her remarks in a speech delivered at Time to THRIVE, an LGBT youth conference hosted by the Human Rights Campaign (HRC) and held at Bally's Hotel and Casino in Las Vegas, Nevada.

“I've often been asked why issues of equality are so important to me,” Clinton told a crowd of 600 professionals who work with children. “This is about the premise and promise of our country. [It's] always marching forward to a more perfect union. I was raised in a family where inertia is not an option.”

Noting the progress on gay marriage over the past decade, Clinton urged the crowd to keep pushing for greater gains.

“With all the incredible progress we had in 2013, it's easy to think progress marks success,” Clinton said. “We certainly shouldn't take anything away from the historic victories in 2013. … But we should not mistake progress for success. We need to continue to push for progress in communities, states and the country.” (The video is embedded on this page. Visit our video library for more videos.)

(Related: Bill Clinton on Uganda anti-gay bill: “Setback to personal freedom.”)