Here is the complaint in California Indian Law Association v. Dept. of Justice (D. D.C.):
On April 8, 2011, at the 36th Annual Indian Law Conference of the Federal Bar Association, in New Mexico, a video recording was presented to all attendees consisting of a speech by Neal Katyal in his capacity as the Acting Solicitor General of the United States (“ASG”) (hereinafter, “Katyal Speech”). The Katyal Speech involved an apology or confession of error for misrepresentations by the OSG to the U.S. Supreme Court in United States v. Sandoval, 231 U.S. 28 (1913), and Tee-Hit-Ton Indians v. United States, 348 U.S. 272 (1955), and background regarding United States v. Tohono O’odham Nation, 131 S. Ct. 1723 (2011), and United States v. Jicarilla Apache Nation, 131 S. Ct. 2313 (2011), which were both then pending before the Supreme Court.
For a limited time you can download the video of the presentation here.