CAFA removal permits federal jurisdiction over class actions with minimal diversity and aggregate damages over five million dollars.

The forum defendant rule bars diversity removal where a properly joined defendant is a citizen of the forum state.

Fraudulent joinder is the doctrine allowing a federal court to disregard a non-diverse defendant joined solely to defeat removal.

A notice of removal transfers a case from state to federal court by filing in the federal district.

Remand returns a removed case to state court, typically because federal jurisdiction is absent or the removal was procedurally defective.

Removal transfers a case filed in state court to federal court when federal jurisdiction exists, on the defendant's notice.

Snap removal is removal by a forum defendant before any forum defendant has been served.

The unanimity requirement obligates all properly served defendants to join in or consent to removal.

The voluntary-involuntary rule permits removal after a case becomes removable only through the plaintiff's voluntary act.