occupy the field
- The act by a higher authority, such as federal or state, to take complete control over a specific area of statutory law, making their laws prevail over those of lower jurisdictions on specific matters
- The federal authority decided to occupy the field on matters related to interstate commerce.
- By choosing to occupy the field, the state laws prevailed over the county's laws regarding specific topics.
- In environmental regulations, sometimes the federal government chooses to occupy the field, rendering lesser jurisdictional laws ineffective.