The phrase that decides most of these disputes is three words long: a covered remand order is not reviewable on appeal or otherwise.
A defendant that removes a case to federal court and loses the remand motion has been sent back to the forum it tried to leave. The instinct is to seek review, and the instinct runs into one of the strongest jurisdictional bars in the United States Code.
28 U.S.C. § 1447(d) provides that an order remanding a case to the state court from which it was removed is not reviewable on appeal or otherwise, with a stated exception for cases removed under 28 U.S.C. § 1442 or § 1443. The words or otherwise are what close the door on the writ.
The statute and the two express exceptions
Section 1447(c) sets out the grounds and the timing. A motion to remand on the basis of any defect other than lack of subject matter jurisdiction must be made within 30 days after the filing of the notice of removal. If at any time before final judgment it appears that the district court lacks subject matter jurisdiction, the case shall be remanded.
Section 1447(d) then bars review, except for orders remanding a case removed under § 1442, the federal officer removal statute, or § 1443, the civil rights removal statute. Those two categories are reviewable by appeal or otherwise. Everything else in the subsection's reach is not, and the bar operates whatever the removal statute was.
Mandamus does not get around it
The question was settled early. In Gravitt v. Southwestern Bell Telephone Co., 430 U.S. 723 (1977), the Supreme Court held that a remand order within the reach of § 1447(d) is not reviewable by mandamus any more than by appeal, because the statute unmistakably commands that such an order is not reviewable on appeal or otherwise.
Kircher v. Putnam Funds Trust, 547 U.S. 633 (2006), restated the point in a modern setting, treating the bar as covering review by any means where the remand rests on a ground within § 1447(c). A petition that concedes the remand was for lack of subject matter jurisdiction and asks for the writ anyway has conceded the case.
Thermtron and the limit on the bar's reach
Thermtron Products, Inc. v. Hermansdorfer, 423 U.S. 336 (1976), read § 1447(d) together with § 1447(c) and held that only remands ordered on the grounds specified in § 1447(c) are immune from review. A district court that remanded a properly removed case because its docket was too crowded had not acted on a § 1447(c) ground, and the order was reviewable by mandamus.
That is the doctrinal opening every petition tries to use, and it is narrower than it looks. The petitioner must show that the stated ground for remand was something other than a defect in removal or a lack of subject matter jurisdiction. Where the district court invoked jurisdiction, the inquiry usually ends.
The map of reviewability
| Basis of the remand | Reviewable? | Authority |
|---|---|---|
| Lack of subject matter jurisdiction | No | 28 U.S.C. § 1447(d); Gravitt v. Southwestern Bell Telephone Co., 430 U.S. 723 (1977) |
| Defect in removal procedure, timely raised | No | 28 U.S.C. §§ 1447(c), (d); Things Remembered, Inc. v. Petrarca, 516 U.S. 124 (1995) |
| A ground outside § 1447(c), such as docket congestion | Yes, and Thermtron allowed mandamus | Thermtron Products, Inc. v. Hermansdorfer, 423 U.S. 336 (1976) |
| Abstention | Yes, by appeal, because the order is final in the relevant sense | Quackenbush v. Allstate Insurance Co., 517 U.S. 706 (1996) |
| Declining supplemental jurisdiction under 28 U.S.C. § 1367(c) | Yes; this is not a remand for lack of subject matter jurisdiction | Carlsbad Technology, Inc. v. HIF Bio, Inc., 556 U.S. 635 (2009) |
| Removal under 28 U.S.C. § 1442 or § 1443 | Yes, by the express exception | 28 U.S.C. § 1447(d) |
| Removal of a class action under the Class Action Fairness Act | Yes, on application to the court of appeals within 10 days | 28 U.S.C. § 1453(c) |
| Westfall Act certification cases | Yes, where a separate statute so provides | Osborn v. Haley, 549 U.S. 225 (2007) |
Why characterization decides most petitions
Powerex Corp. v. Reliant Energy Services, Inc., 551 U.S. 224 (2007), supplies the rule that ends the majority of these disputes. Once a district court has characterized its remand as resting on a lack of subject matter jurisdiction, and the characterization is colorable, § 1447(d) bars appellate review even if the characterization is wrong.
The consequence for a petitioner is that the argument has to be made before the remand order is written, not after. Once the district court has said the words, a court of appeals will not look behind them to see whether the label fits. That is an unusual allocation, and it reflects a congressional preference for speed in returning improperly removed cases over accuracy in individual rulings.
When an exception opens, how much comes with it
Where a remand order is reviewable because the defendant removed under the federal officer or civil rights statutes, a further question arises: may the court of appeals examine only that ground, or the whole order? In 2021 the Supreme Court held that the entire remand order is reviewable in that situation, rejecting the narrower reading under which review was confined to the ground that opened the door.
The practical effect is significant in litigation where a defendant asserts several removal grounds and only one falls within the exception. It also means the exception is worth pleading carefully, because it carries the rest of the case with it on review.
What no writ will accomplish here
The limits are stated by the statute rather than by the discretionary character of the writ, which makes them harder than usual.
- The bar is not a preference. Section 1447(d) is not a factor to weigh under Cheney. Where it applies, there is no jurisdiction to review, and a clear and indisputable right cannot exist.
- Mandamus does not create jurisdiction. The All Writs Act, 28 U.S.C. § 1651, authorizes writs in aid of jurisdiction a court already has. It is not an independent grant.
- Being right does not help. Powerex forecloses review of a colorable but mistaken characterization.
- The remedy is state court. A defendant remanded in error litigates in state court and, if a federal question was decided against it, may seek review of the state judgment through the ordinary channels.
- Re-removal is limited. A second notice of removal requires a new ground arising after the first, not a better argument about the same one, and the § 1447(c) 30-day clock governs procedural defects.
The arguments still being made
Three questions recur. The first is how far Thermtron reaches: whether remands based on a forum-selection clause, on a contractual waiver of removal, or on equitable considerations fall inside or outside § 1447(c). The second is the treatment of partial remands, where a district court keeps some claims and returns others, and whether the retained portion changes the analysis. The third is how thin a district court's jurisdictional reasoning can be and still be colorable under Powerex.
None of these is settled uniformly, and the honest framing in a petition is that the question is open. Overstating it invites the shortest possible denial: the order was a remand, and remands are not reviewable.
Key points
- 28 U.S.C. § 1447(d) makes a covered remand order unreviewable on appeal or otherwise, and Gravitt v. Southwestern Bell Telephone Co., 430 U.S. 723 (1977), confirms that the phrase reaches mandamus.
- Thermtron Products, Inc. v. Hermansdorfer, 423 U.S. 336 (1976), limits the bar to remands ordered on the grounds specified in § 1447(c), which is the only genuine opening a petitioner has.
- Powerex Corp. v. Reliant Energy Services, Inc., 551 U.S. 224 (2007), forecloses review once the district court has colorably characterized the remand as jurisdictional, even if the label is wrong.
- The express exceptions are removals under 28 U.S.C. § 1442 and § 1443, and separate statutes such as 28 U.S.C. § 1453(c) supply their own routes with their own deadlines.
- The All Writs Act supports writs in aid of existing jurisdiction and does not create jurisdiction where a statute has withdrawn it.