1. Whether the Fourth Circuit may impose "undue delay" as a standalone prerequisite to mandamus relief when this Court's three-part test includes no such requirement.

2. Whether the Fourth Circuit may categorically deny mandamus as a "substitute for appeal" without analyzing whether any appeal is available.

Whether the Fourth Circuit may impose 'undue delay' as a standalone prerequisite to mandamus relief and categorically deny mandamus as a 'substitute for appeal' without analyzing available remedies