“If Hastings’ family had a contract with the state, as shown in a document from 1878 with signatures from both sides, it might still be a binding agreement that could not be changed by future legislation,”said David A. Carrillo, executive director of the California Constitution Center at UC Berkeley School of Law and is not involved in the court case. “But if there is no such document, Carrillo said, the Legislature that passed the 1878 law ‘cannot bind the hands of a future Legislature.'”