opinion: Alex M. AZAR, II, Secretary of Health and Human Services, et al.
  v.
  Rochelle GARZA, as guardian ad litem to unaccompanied minor J.D.
  No. 17-654.
  Supreme Court of the United States
  June 4, 2018.
  PER CURIAM.
  Jane Doe, a minor, was eight weeks pregnant when she unlawfully crossed the border into the United States. She was detained and placed into the custody of the Office of Refugee Resettlement (ORR), part of the Department of Health and Human Services. ORR placed her in a federally funded shelter in Texas. After an initial medical examination, Doe requested an abortion. But ORR did not allow Doe to go to an abortion clinic. Absent "emergency medical situations," ORR policy prohibits shelter personnel from "taking any action that facilitates an abortion without direction and approval from the Director of ORR." Plaintiff's Application for TRO and Motion for Preliminary Injunction in Garza v. Hargan, No. 17-cv-2122 (D DC), Dkt. No. 3-5, p. 2 (decl. of Brigitte Amiri, Exh. A). According to the Government, a minor may "le[ave] government custody by seeking voluntary departure, or by working with the government to identify a suitable sponsor who could take custody of her in the United States." Pet. for Cert. 18; see also 8 U.S.C. § 1229c ; 8 CFR §§ 236.3, 1240.26 (2018).
  Respondent Rochelle Garza, Doe's guardian ad litem, filed a putative class action on behalf of Doe and "all other pregnant unaccompanied minors in ORR custody" challenging the constitutionality of ORR's policy. Complaint in Garza v. Hargan, No. 17-cv-2122 (D DC), Dkt. No. 1, p. 11. On October 18, 2017, the District Court issued a temporary restraining order allowing Doe to obtain an abortion immediately. On October 19, Doe attended preabortion counseling, required by Texas law to occur at least 24 hours in advance with the same doctor who performs the abortion. The clinic she visited typically rotated physicians on a weekly basis.
  The next day, a panel of the Court of Appeals for the District of Columbia Circuit vacated the relevant portions of the temporary restraining order. Noting that the Government had assumed for purposes of this case that Doe had a constitutional right to an abortion, the panel concluded that ORR's policy was not an "undue burden," Planned Parenthood of Southeastern Pa. v. Casey, 505 U.S. 833, 876, 112 S.Ct. 2791, 120 L.Ed.2d 674 (1992) (plurality opinion).
  Four days later, on October 24, the Court of Appeals, sitting en banc, vacated the panel order and remanded the case to the District Court. Garza v. Hargan, 874 F.3d 735, 735-736 (C.A.D.C.2017). The same day, Garza sought an amended restraining order. Garza's lawyers asked the District Court to order the Government to make Doe available "in order to obtain the counseling required by state law and to obtain the abortion procedure." Pet. for Cert. 12 (emphasis deleted). The District Court agreed and ordered the Government to act accordingly. Doe's representatives scheduled an appointment for the next morning and arranged for Doe to be transported to the clinic on October 25 at 7:30 a.m.
  The Government planned to ask this Court for emergency review of the en banc order. Believing the abortion would not take place until October 26 after Doe had repeated the state-required counseling with a new doctor, the Government informed opposing counsel and this Court that it would file a stay application early on the morning of October 25. The details are disputed, but sometime over the course of the night both the time and nature of the appointment were changed. The doctor who had performed Doe's earlier counseling was available to perform the abortion after all and the 7:30 a.m. appointment was moved to 4:15 a.m. At 10 a.m., Garza's lawyers informed the Government that Doe "had the abortion this morning." Id ., at 15 (internal quotation marks omitted). The abortion rendered the relevant claim moot, so the Government did not file its emergency stay application. Instead, the Government filed this petition for certiorari.
  When "a civil case from a court in the federal system ... has become moot while on its way here," this Court's "established practice" is "to reverse or vacate the judgment below and remand with a direction to dismiss." United States v. Munsingwear, Inc., 340 U.S. 36, 39, 71 S.Ct. 104, 95 L.Ed. 36 (1950). Because this practice is rooted in equity, the decision whether to vacate turns on "the conditions and circumstances of the particular case." United States v. Hamburg-Amerikanische Packetfahrt-Actien Gesellschaft, 239 U.S. 466, 478, 36 S.Ct. 212, 60 L.Ed. 387 (1916). One clear example where "[v]acatur is in order" is "when mootness occurs through ... the 'unilateral action of the party who prevailed in the lower court.' " Arizonans for Official English v. Arizona, 520 U.S. 43, 71-72, 117 S.Ct. 1055, 137 L.Ed.2d 170 (1997) (quoting U.S. Bancorp Mortgage Co. v. Bonner Mall Partnership, 513 U.S. 18, 23, 115 S.Ct. 386, 130 L.Ed.2d 233 (1994) ). " 'It would certainly be a strange doctrine that would permit a plaintiff to obtain a favorable judgment, take voluntary action that moots the dispute, and then retain the benefit of the judgment.' " 520 U.S., at 75, 117 S.Ct. 1055 (alterations omitted).
  The litigation over Doe's temporary restraining order falls squarely within the Court's established practice. Doe's individual claim for injunctive relief-the only claim addressed by the D.C. Circuit-became moot after the abortion. It is undisputed that Garza and her lawyers prevailed in the D.C. Circuit, took voluntary, unilateral action to have Doe undergo an abortion sooner than initially expected, and thus retained the benefit of that favorable judgment. And although not every moot case will warrant vacatur, the fact that the relevant claim here became moot before certiorari does not limit this Court's discretion. See, e.g., LG Electronics, Inc. v. InterDigital Communications, LLC, 572 U.S. ----, 134 S.Ct. 1876, 188 L.Ed.2d 905 (2014) (after the certiorari petition was filed, respondents withdrew the complaint they filed with the International Trade Commission); United States v. Samish Indian Nation, 568 U.S. 936, 133 S.Ct. 423, 184 L.Ed.2d 253 (2012) (after the certiorari petition was filed, respondent voluntarily dismissed its claim in the Court of Federal Claims); Eisai Co. v. Teva Pharmaceuticals USA, Inc., 564 U.S. 1001, 131 S.Ct. 2991, 180 L.Ed.2d 818 (2011) (before the certiorari petition was filed, respondent's competitor began selling the drug at issue, which was the relief that respondent had sought); Indiana State Police Pension Trust v. Chrysler LLC, 558 U.S. 1087, 130 S.Ct. 1015, 175 L.Ed.2d 614 (2009) (before the certiorari petition was filed, respondent completed a court-approved sale of assets, which mooted the appeal). The unique circumstances of this case and the balance of equities weigh in favor of vacatur.
  The Government also suggests that opposing counsel made "what appear to be material misrepresentations and omissions" that were "designed to thwart this Court's review." Pet. for Cert. 26. Respondent says this suggestion is "baseless." Brief in Opposition 23. The Court takes allegations like those the Government makes here seriously, for ethical rules are necessary to the maintenance of a culture of civility and mutual trust within the legal profession. On the one hand, all attorneys must remain aware of the principle that zealous advocacy does not displace their obligations as officers of the court. Especially in fast-paced, emergency proceedings like those at issue here, it is critical that lawyers and courts alike be able to rely on one another's representations. On the other hand, lawyers also have ethical obligations to their clients and not all communication breakdowns constitute misconduct. The Court need not delve into the factual disputes raised by the parties in order to answer the Munsingwear question here.
  The petition for a writ of certiorari is granted. The Court vacates the en banc order and remands the case to the United States Court of Appeals for the District of Columbia Circuit with instructions to direct the District Court to dismiss the relevant individual claim for injunctive relief as moot. See Munsingwear, supra .
  It is so ordered.