Looks like there's some nuance here. From your linked document (emphasis mine): > Although Congress has ultimate authority over federal lands under the Propert

Looks like there's some nuance here. From your linked document (emphasis mine): > Although Congress has ultimate authority over federal lands under the Property Clause, states have legal authority to manage federal lands within their borders to the extent that Congress has chosen to give them such authority. So whether California is able to manage forests on federal land within state borders to address the risk of uncontrolled fires isn't immediately clear, and presumably someone would need to dig up a relevant statute, if any, to show who is actually responsible.