This educational guide is based on the linked primary sources. It is not a Court publication, is not affiliated with the Court, and is not legal advice.
In brief
Overview
According to Petitioner, the case raises the question whether section 4 of the Federal Arbitration Act implicitly repeals section 1331’s “well‑pleaded complaint” requirement, which would affect federal subject‑matter jurisdiction.
According to Petitioner, the dispute also concerns whether any “look‑through” jurisdiction must be grounded in section 1332 rather than arising from section 4.
Background and question before the Court
According to Chief Justice Roberts, the Court will hear argument in Vaden v. Discover Bank.
What each side argues
Petitioner
According to Petitioner, the ordinary meaning of section 4, the structure of the FAA, and its purposes support the petitioner’s view of subject‑matter jurisdiction.
According to Petitioner, section 4 has no independent look‑through force; any look‑through must be grounded in section 1332.
Respondents
The respondents argue for a look‑through theory that would permit jurisdiction under the FAA.
What happened at oral argument
According to Chief Justice Roberts, chief Justice Roberts introduced the argument: “We will hear argument next in Vaden v. Discover Bank.”
Justice Ginsburg asked: “Why isn’t section 2 of the Arbitration Act sufficient to take care of the ouster doctrine, whatever may have been left of it?”
According to Justice Souter, justice Souter questioned: “What is it in the text of section 2 that would seem to leave it inadequate to touch equity as well as law?”
Justice Stevens asked: “Why do the words ‘save for such agreement’ cut back on the jurisdiction?”
Justice Kennedy asked: “Could you have brought a declaratory judgment action to establish that your Federal claim—?”
According to Justice Scalia, justice Scalia expressed concern: “That’s what worries me.”
Justice Kennedy later asked: “Is the petitioner’s argument for a limited look‑through compromised by the Beneficial Bank case which allows removal if there is a Federal defense?”
Justice Stevens questioned a definition: “That isn’t quite true, because here there is a definition in the Federal claim.”
- [1] 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdf, p. 3
- [2] 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdf, p. 5
- [3] 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdf, p. 7
- [4] 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdf, p. 9
- [5] 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdf, p. 37
- [6] 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdf, p. 44
- [7] 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdf, p. 57
- [8] 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdf, p. 58
What the Court decided
Why it matters
Terms to know
No glossary terms are available for this guide.
Primary sources
Read the source materials on the official site or open the immutable repository copy used for this guide.
- 074a81f9db1b657d9b93-r1-2f8d9b98a34ac9ce.pdforal argument transcript
Guide generated September 22, 2026. Automated validation accepted this version.