opinion: Justice Stevens
  delivered the opinion of the Court.
  Prior to January 3, 2007, Mark Dayton represented the State of Minnesota in the United States Senate. Appellee, Brad Hanson, was employed in the Senator’s Ft. Snelling office prior to his discharge by the Senator, which he alleges occurred on July 3, 2002. Hanson brought this action for damages against appellant, the Senator’s office (Office), invoking the District Court’s jurisdiction under the Congressional Accountability Act of 1995 (Act), 109 Stat. 3, as amended, 2 U. S. C. § 1301 et seq. (2000 ed. and Supp. IV), and alleging violations of three other federal statutes. The District Court denied appellant’s motion to dismiss the complaint based on a claim of immunity under the Speech or Debate Clause of the Constitution. The Court of Appeals affirmed, Fields v. Office of Eddie Bernice Johnson, Employing Office, United States Congress, 459 F. 3d 1 (CADC 2006), the Office invoked our appellate jurisdiction under § 412 of the Act, 2 U. S. C. § 1412, and we postponed consideration of jurisdiction pending hearing the case on the merits, 549 U. S. 1177 (2007). Because we do not have jurisdiction under §412, we dismiss the appeal. Treating appellant’s jurisdictional statement as a petition for a writ of certiorari, we deny the petition.
  Under § 412 of the Act, direct review in this Court is available “from any interlocutory or final judgment, decree, or order of a court upon the constitutionality of any provision” of the statute. Neither the order of the District Court denying appellant’s motion to dismiss nor the judgment of the Court of Appeals affirming that order can fairly be characterized as a ruling “upon the constitutionality” of any provision of the Act. The District Court’s minute order denying the motion to dismiss does not state any grounds for decision. App. to Juris. Statement 59a. Both parties agree that that order cannot, therefore, be characterized as a constitutional holding. The Court of Appeals’ opinion rejects appellant’s argument that forcing Senator Dayton to defend against the allegations in this case would necessarily contravene the Speech or Debate Clause, although it leaves open the possibility that the Speech or Debate Clause may limit the scope of the proceedings in some respects. Neither of those holdings qualifies as a ruling on the validity of the Act itself.
  The Office argues that the Court of Appeals’ holding amounts to a ruling that the Act is constitutional “as applied.” According to the Office, an “as applied” constitutional holding of that sort satisfies the jurisdictional requirements of §412. We find this reading difficult to reconcile with the statutory scheme. Section 413 of the Act provides that
  “[t]he authorization to bring judicial proceedings under [the Act] shall not constitute a waiver of sovereign immunity for any other purpose, or of the privileges of any Senator or Member of the House of Representatives under [the Speech or Debate Clause] of the Constitution.” 2 U. S. C. § 1413.
  This provision demonstrates that Congress did not intend the Act to be interpreted to permit suits that would otherwise be prohibited under the Speech or Debate Clause. Consequently, a court’s determination that jurisdiction attaches despite a claim of Speech or Debate Clause immunity is best read as a ruling on the scope of the Act, not its constitutionality. This reading is faithful, moreover, to our established practice of interpreting statutes to avoid constitutional difficulties. See Clark v. Martinez, 543 U. S. 371, 381-382 (2005).
  The provision for appellate review is best understood as responding to a congressional concern that if a provision of the statute is declared invalid there is an interest in prompt adjudication by this Court. To extend that review to instances in which the statute itself has not been called into question, giving litigants under the Act preference over litigants in other cases, does not accord with that rationale. This is also consistent with our cases holding that “statutes authorizing appeals are to be strictly construed.” Perry Ed. Assn. v. Perry Local Educators’ Assn., 460 U. S. 37, 43 (1983); see also Fornaris v. Ridge Tool Co., 400 U. S. 41, 42, n. 1 (1970) (per curiam).
  Nor are there special circumstances that justify the exercise of our discretionary certiorari jurisdiction to review the Court of Appeals’ affirmance of the interlocutory order entered by the District Court. Having abandoned its decision in Browning v. Clerk, U. S. House of Representatives, 789 F. 2d 923 (1986), the D. C. Circuit is no longer in obvious conflict with any other Circuit on the application of the Speech or Debate Clause to suits challenging the personnel decisions of Members of Congress. Compare 459 F. 3d 1 (case below) with Bastien v. Office of Sen. Ben Nighthorse Campbell, 390 F. 3d 1301 (CA10 2004).
  Accordingly, the appeal is dismissed for want of jurisdiction, and certiorari is denied. We express no opinion on the merits, nor do we decide whether this action became moot upon the expiration of Senator Dayton’s term in office.
  It is so ordered.
  The Chief Justice took no part in the consideration or decision of this case.
  A brief of amicus curiae urging reversal was filed for the President pro tempore of the Senate of Pennsylvania by John P. Krill, Jr., Linda J. Shorey, and George A. Bibikos.
  A brief of amici curiae urging affirmance was filed for Congressman Barney Frank et al. by Glen D. Nager, Traci L. Lovitt, and Virginia A. Seitz.
  A brief of amicus curiae was filed for AARP by Thomas W. Osborne and Melvin Radowitz.
  Appellee alleged violations of the Family and Medical Leave Act of 1993,107 Stat. 6, as amended, 29 U. S. C. § 2601 et seq. (2000 ed. and Supp. IV), the Americans with Disabilities Act of 1990,104 Stat. 327,42 U. S. C. §12101 et seq. (2000 ed. and Supp. IV), and the Fair Labor Standards Act of 1938, 52 Stat. 1060, as amended, 29 U. S. C. §201 et seq. (2000 ed. and Supp. IV).
  “[F]or any Speech or Debate in either House, [the Senators and Representatives] shall not be questioned in any other Place.” Art. I, § 6, el. 1.
  Section 412 reads in full:
  “Expedited review of certain appeals
  “(a) In general
  “An appeal may be taken directly to the Supreme Court of the United States from any interlocutory or final judgment, decree, or order of a court upon the constitutionality of any provision of this chapter.
  “(b) Jurisdiction
  “The Supreme Court shall, if it has not previously ruled on the question, accept jurisdiction over the appeal referred to in subsection (a) of this section, advance the appeal on the docket, and expedite the appeal to the greatest extent possible.” 2 U. S. C. § 1412.
  Had the District Court’s order qualified as a ruling “upon the constitutionality” of a provision of the Act, the Court of Appeals’ jurisdiction to hear the appeal would have been called into serious doubt. See 28 U. S. C. § 1291 (granting jurisdiction to the courts of appeals from final decisions of federal district courts “except where a direct review may be had in the Supreme Court”).
  Nor does this reading make a dead letter out of § 412’s limitation of appellate review in this Court to constitutional rulings. The possibility remains that provisions of the Act could be challenged on constitutional grounds unrelated to the Speech or Debate Clause.