This may be a key.
Isolate the gene/s responsible for the resistance and incorporate them into susceptible species.
In the mean time, get ready to cut and split a great deal of firewood.
They're still trying to do that with chesnuts and it's been how long since the blight eliminated them from forests? Unless they can get the new pest quarantined, you can kiss most of the oaks goodby. The effect of the loss of the mast crop isn't being considered but it will obviously affect everything from wild turkeys to squirrels and deer.
I do believe it is against the law to transport diseased firewood in California...
That's the one thing the tree huggers won't do. When pine beetles were ravaging conifers, Algore's minions sued to prevent logging in affected areas. The result was record wildfires. They'd never agree to use cutting to isolate the diseased trees.