The problem California faces is no worse than the problems faced by the US in 1919. President Harding had the problem solved in 18 months and his inaugural address shows how he did it:
"A regret for the mistakes of yesterday must not, however, blind us to the tasks of today. War never left such an aftermath. There has been staggering loss of life and measureless wastage of materials. Nations are still groping for return to stable ways. Discouraging indebtedness confronts us like all the war-torn nations, and these obligations must be provided for. No civilization can survive repudiation.
We can reduce the abnormal expenditures, and we will. We can strike at war taxation, and we must. We must face the grim necessity, with full knowledge that the task is to be solved, and we must proceed with a full realization that no statute enacted by man can repeal the inexorable laws of nature. Our most dangerous tendency is to expect too much of government, and at the same time do for it too little. We contemplate the immediate task of putting our public household in order. We need a rigid and yet sane economy, combined with fiscal justice, and it must be attended by individual prudence and thrift, which are so essential to this trying hour and reassuring for the future."
http://www.vlib.us/amdocs/texts/34hard1.htm