The White House on Sunday released a video featuring President Barack Obama welcoming attendees to the 19th International AIDS Conference.

Secretary of State Hillary Clinton and former presidents Bill Clinton and George W. Bush are among the politicians expected to attend the conference, which opened Sunday at the Washington Convention Center.

This is the first time that the United States has hosted the conference since 1990 due to a travel ban which restricted people living with HIV from entering the country. In 2009, President Obama signed legislation which ended the 22-year ban.

White House officials announced last week that the president would not be speaking at the conference.

“On behalf of Americans everywhere, welcome to the 2012 International AIDS Conference and thank you for your commitment to achieving an AIDS-free generation here in America and around the world,” Obama says in the 3-minute video. “We've made great progress, but there is still a lot of work to do. So, let's move forward together.” (The video is embedded in the right panel of this page. Visit our video library for more videos.)

Senior Obama Administration officials – in addition to Hillary Clinton – participating in the conference include Secretary of Health and Human Services Kathleen Sebelius; U.S. Global AIDS Coordinator Ambassador Eric Goosby; Director of the White House Office of National AIDS Policy Grant Colfax; and Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, NIH.