Here is the president's full statement on the 9/11 documents:

When I ran for president, I made a commitment to ensuring transparency regarding the declassification of documents on the September 11, 2001 terrorist attacks on America.

As we approach the 20th anniversary of that tragic day, I am honoring that commitment. Today, I signed an executive order directing the Department of Justice and other relevant agencies to oversee a declassification review of documents related to the Federal Bureau of Investigation’s September 11th investigations. The executive order requires the Attorney General to release the declassified documents publicly over the next six months.

We must never forget the enduring pain of the families and loved ones of the 2,977 innocent people who were killed during the worst terrorist attack on America in our history. For them, it was not only a national and international tragedy. It was a personal devastation. For 20 years, children have grown up without parents and parents have suffered without children. Husbands and wives have had to find a way forward without their partners in life. Brothers and sisters, uncles and aunts, loved ones and friends have celebrated 20 years of birthdays, family gatherings, and milestones looking at an empty chair at homes and with a hole in their hearts.

My heart continues to be with the 9/11 families who are suffering, and my Administration will continue to engage respectfully with members of this community. I welcome their voices and insight as we chart a way forward.