In May 2008 a second meeting[2] was held, co-sponsored by USGS, NASA, and the Association of American State Geologists.
In 2009, several sessions at the annual American Society for Photogrammetry and Remote Sensing meeting were devoted to this initiative.
[1] The USGS website remains a central source for information about the national initiative, and it includes presentation materials from the various meetings about the subject.
This site also discusses how the USGS incorporates LIDAR data into the National Elevation Dataset.
[2] While there is consensus at a federal level supporting the creation of a National LIDAR Dataset, key aspects remain unresolved, including funding, data specifications, and the delineation of agency roles and responsibilities.