Whether the APA requires heightened judicial scrutiny or a more substantial justification whenever an agency changes an existing policy.
Holding
No. An agency changing policy must acknowledge the change and provide good reasons for its new policy, but it need not prove that its new reasons are better than the reasons supporting the old policy.
Reasoning
The APA directs courts to set aside agency action that is arbitrary or capricious, but it does not prescribe a distinct, heightened standard for policy reversals. Under ordinary arbitrary-and-capricious review, a court asks whether the agency examined relevant information and gave a satisfactory explanation; it may not substitute its own policy judgment for the agency's.
An agency ordinarily must show awareness that it is changing course. It cannot silently abandon an existing rule or disregard facts, findings, or reliance interests that supported the earlier policy. Where a new policy contradicts prior factual findings or disrupts serious reliance interests, a fuller explanation may be necessary because those matters are relevant to reasoned decisionmaking.
But a conscious policy change does not itself require the agency to persuade a court that the new policy is objectively superior. It is enough that the policy is lawful under the statute, rests on good reasons, and is one the agency reasonably believes is preferable. Constitutional objections remain separate questions of legality, not grounds for applying a stricter version of ordinary APA review.