S. 4000 reaffirms that the Indian Reorganization Act applies to the Lytton Rancheria of California. This means that the U.S. Secretary of the Interior can acquire and hold land in trust for the Lytton Rancheria, and such land will become part of their reservation. The land...
Simple Explanation
The bill says that the U.S. government can hold land for the Lytton Rancheria, a Native American tribe, and make it part of their home area, just like other tribes.