Petition of the day

The petition of the day is:

Issues: (1) Whether the U.S. Court of Appeals for the 9th Circuit erred in creating an immigration-specific rule under which state police power regulations that “arrang[e]” federal immigration classifications are pre-empted, even if pre-emption was not “the clear and manifest purpose of Congress”; and (2) whether the 9th Circuit erred in assuming that the Deferred Action for Childhood Arrivals program, an executive-branch policy of non-enforcement, was valid “federal law” capable of pre-empting a state police power regulation.