Whether a District Court can nullify an exist­ing diversity jurisdiction by doing sua sponte conversion of one of Plaintiff's two witnesses into Plaintiff's second Defendant without a hearing or full briefing; an action that de­stroyed Plaintiff's diversity jurisdiction, de­nied Plaintiff due process, and resulted in the dismissal of Plaintiff's complaint for lack of subject-matter jurisdiction.

Whether a litigant can waive or forfeit an is­sue that determined subject-matter jurisdic­tion because the issue was not mentioned in the complaint but the issue was raised in the pleadings.

Whether a District Court can nullify an existing diversity jurisdiction by doing sua sponte conversion of one of Plaintiff's two witnesses into Plaintiff's second Defendant without a hearing or full briefing