Federal Jurisdiction: Federal Question, Diversity, and Amount in Controversy (Notes)

  • Federal jurisdiction rests on two main bases: federal question and diversity of citizenship.
  • If a federal statute is violated and the statute says so, jurisdiction may be limited to federal court for that claim. Some statutes require bringing specific claims in federal court; others don’t spell out a venue and rely on general jurisdiction rules.
  • For claims that do not fit federal question or diversity, the general rule is that the case is filed where it belongs under the applicable law, but removal dynamics come into play if the case is filed in state court first.
  • Removal rules (when a case filed in state court can move to federal court):
    • If the basis is a federal question, and the case is filed in state court, the defendant may remove to federal court. If the case is filed in federal court, removal is not applicable.
    • If the basis is diversity of citizenship, and the case is filed in state court, the defendant may remove to federal court. If the case is filed in federal court, the defendant cannot remove it again to state court.
  • In federal question cases:
    • Plaintiff files in federal court: the case stays in federal court (no removal needed).
    • Plaintiff files in state court: defendant may move to federal court.
    • If there is also diversity, rules about removal and where the action can stay apply as above; however, if the plaintiff files in federal court and there is diversity, the defendant does not have the option to move it back to state court.
  • In practice, most cases are filed in state court; removal to federal court happens in a minority of cases, unless there is clear jurisdiction under federal question or diversity.
  • Diversity of citizenship is about where the parties are from and the amount in controversy. The two key requirements are:
    • Complete diversity: every plaintiff must be from a different state than every defendant.
    • Sufficient amount in controversy: the amount in controversy must exceed {75{,}000}.
  • How to determine diversity (basic ideas):
    • “Where is the business incorporated?” is used for corporations to determine citizenship, alongside the principal place of business (and the state of incorporation).
    • For individuals, domicile (where they reside and intend to remain) determines citizenship.
  • Complete diversity explained with examples:
    • Example 1: Plaintiffs from NC; Defendants from VA. This would satisfy complete diversity if all plaintiffs are from NC and all defendants are from another single state (VA).
    • Example 2: Joe (NC) and Billy (VA) on the plaintiff side; John (NC) and Mary (VA) on the defendant side. This still satisfies complete diversity because every plaintiff’s state is different from every defendant’s state across the two sides.
    • Example 3: If Joe (NC), Billy (VA) on the plaintiff side and John (NC), Mary (VA) on the defendant side, it is not complete diversity if any state appears on both sides (e.g., NC appears on both sides).
  • Amount in controversy concept:
    • The lawsuit must seek more than {75{,}000}} to satisfy the diversity requirement (in conjunction with complete diversity).
    • The proper term is the "amount in controversy" (AIC). If a plaintiff asks for only $25{,}000, diversity jurisdiction cannot be claimed in federal court on that basis.
    • Plaintiffs often avoid fixing a precise number in the complaint to preserve flexibility, but at times they may allege that the amount in controversy exceeds $75{,}000 to attempt removal or to qualify for federal jurisdiction.
  • Practice scenarios (illustrative):
    • Scenario A: Plaintiff files in federal court in Minnesota; Plaintiff seeks $100{,}000; Defendants are from Iowa. This is a diverse case with AIC $100{,}000, so filing in federal court is appropriate; If the plaintiff had instead filed in state court, the defendant could remove to federal court.
    • Scenario B: Plaintiff from Florida sues Defendant from Texas for $25{,}000. Federal court jurisdiction based on diversity would not apply (AIC is too low); If there is no federal question, removal to federal court is not available.
    • Scenario C: Lou from North Carolina sues Nike (headquartered in a different state) for $100{,}000 for a defective product. If Nike is headquartered outside NC, complete diversity may exist and federal court could be proper. If Nike is headquartered in NC (same state as Lou) or if the product issue is governed solely by state law with no federal question, there is no diversity-based federal jurisdiction.
    • Scenario D: Lou (NC) and Nick (VA) sue Greg (VA) for $100{,}000 in North Carolina. Not completely diverse because a defendant (Greg) shares the same state as at least one plaintiff, so federal jurisdiction based on diversity would not exist.
  • Practical and strategic takeaways:
    • Most cases are filed in state court; federal jurisdiction only kicks in when there is a clear federal question or complete diversity with a sufficient amount in controversy.
    • Businesses and plaintiffs may choose forum (forum shopping) strategically to gain the advantages of federal or state procedures, jury pools, and appellate pathways.
    • If a case could be heard in either court, a defendant may prefer federal court if they believe the federal standards or jury pool will be beneficial; conversely, plaintiffs may prefer state court in certain circumstances.
    • The interplay between federal and state law means state courts will interpret and apply federal law when appropriate, so understanding which legal regime governs a claim is crucial.
  • Quick recall formulas and definitions:
    • Complete diversity condition: for all pi ∈ P and dj ∈ D, state(pi) ≠ state(dj)
    • Amount in controversy (AIC): AIC > 75{,}000
    • Federal question jurisdiction arises when the plaintiff’s claim involves a federal law or a claim that requires the interpretation or application of federal statutes or the Constitution.
    • For corporations: citizenship = state of incorporation and principal place of business (in general, though the lecture notes mention just “where is the business incorporated”).
  • Connections to foundational principles and real-world relevance:
    • Forum selection and jurisdiction shape produce settlement dynamics, the speed of trials, and potential remedies.
    • Understanding removal helps explain why some cases end up in federal court even when filed in state court, and why some cases stay in state court despite potential federal questions.
    • The thresholds (federal question, complete diversity, and $75,000) are designed to prevent federal courts from being overwhelmed with minor, purely local claims and to ensure federal courts hear cases with genuine national significance.
  • Ethical and practical implications:
    • Lawyers must accurately assess jurisdiction to avoid improper removal or misfiling, which could delay proceedings or prejudice clients.
    • Strategic misrepresentation of the amount in controversy to manipulate jurisdiction is unethical and risky; courts scrutinize complaint pleadings and may allow amendments or remand if jurisdiction is improper.
  • Key takeaway rules to memorize for the exam:
    • Two main paths to federal jurisdiction: federal question or diversity of citizenship.
    • Complete diversity requires no plaintiff share of a state with any defendant on the opposing side.
    • The amount in controversy must exceed {75{,}000} for diversity-based jurisdiction.
    • Removal from state court to federal court is permitted when the basis is federal question or diversity, with the plaintiff’s choice of forum influencing where the case can start and whether it can be removed.
  • Quick practice check (conceptual):
    • If a plaintiff files a $100k federal claim in state court, can the defendant move to federal court? Yes (federal question or diversity can support removal, depending on the exact basis and parties).
    • If a plaintiff files a $25k claim in state court, is removal to federal court possible on the basis of diversity? No, because AIC is below $75k.
    • If the plaintiff and defendant are from the same state, is federal jurisdiction likely under diversity? No, unless a federal question exists.
    • If there are multiple plaintiffs and multiple defendants, determine complete diversity by checking if any state appears on both sides of the plaintiff/defendant divide.