1 U.S. 567, 571 (2004) ("Challenges to subject-matter jurisdiction can of course be raised at any time prior to final judgment."); United States v. Giraldo-Prado, 150 F.3d 1328, 1329 (11th Cir. 1998) (recognizing that "a party may raise jurisdiction at any time during the pendency of the proceedings"); Harrel