The correct answer to this open question is the following.
How was the Agua Caliente housing development blocked?
Cahuilla Indians that opposed the millionaire project to use their lands tried to block the Agua Caliente development by protesting and impeding the entrance of people related to the investment project. The original intention was to block Shadowrock, trying to stop any advancements. They do not want the project to move forward. However, these opponents did not have much success with their efforts.
Cahuilla Indians of Agua Caliente accepted to sign a lucrative deal that included the development of approximately 210 acres of their lands in the region known as Chino Cone.
Shadowrock's lucrative proposition included the construction of a hotel, golf courses, and homes in the Coachella Valley area.