Upon the December 22, 2011 reassignment to the undersigned Judge, the Court reviewed the complaint in this case to determine whether it has subject matter jurisdiction. Under Federal Rule of Civil Procedure 12(h)(3), this Court is obligated to review its own jurisdiction sua sponte. See Hammes v. AAMCO Transmissions, Inc., 33 F.3d 774, 778 (7th Cir. 1994) ("the court has an independent duty to satisfy itself that it has subject-matter jurisdiction"); see also Johnson v. Wattenbarger, 361 F.3d 991, 992 (7th Cir. 2004) (a district court's "first duty in every suit" is "to determine the existence of subject-matter jurisdiction."); Wisconsin Knife Works v. National Metal Crafters, 781 F.2d 1280, 1282 (7th Cir. 1986 ("The first thing a federal judge should do when a complaint is filed is check to see that federal jurisdiction is properly alleged."). In light of Seventh Circuit Court of Appeals opinions, see, e.g., Smith v. American Gen'l Life and Accident Ins. Co., 337 F.3d 888 (7th Cir. 2003); Tylka v. Gerber Prods. Co., 211 F.3d 445 (7th Cir. 2000); America's Best Inns, Inc. v. Best Inns of Abilene, L.P., 980 F.2d 1072 (7th Cir. 1992) (per curiam), this Court has undertaken a more rigorous initial review of complaints to ensure that jurisdiction has been properly pleaded. Plaintiff has chosen the federal court for this class action claim, and must establish federal jurisdiction. See Brill v. Countrywide Home Loans, Inc., 427 F.3d 446, 447 (7th Cir. 2005).
Plaintiff brings this consolidated action on her behalf and on behalf of a putative class pursuant to the Court's original jurisdiction under 28 U.S.C. § 1332(d)(2). Section 1332(d) applies to class actions and § 1332(d)(2) gives the district courts "original jurisdiction of any civil action in which the matter in controversy exceeds the sum or value of $5,000,000" and is a class action in which, applicable here, "any member of a class of plaintiffs is a citizen of a State different from any defendant." 28 U.S.C. § 1332(d)(2). The class must also contain at least 100 members. 28 U.S.C. § 1332(d)(5)(B); see also In re Safeco Insurance Company of America, 585 F.3d 326, 330 (7th Cir. 2009). Here, Plaintiff properly alleges that the amount in controversy exceeds $5,000,000, and claims that there are "tens of thousands if not hundreds of thousands of Class members." However, Plaintiff's allegation of her citizenship is defective. The blanket assertion that 'Plaintiff's citizenship is different than the citizenship of at least one Defendant' is insufficient.