Diana Stevens-Reynolds v. Wilshire Insurance Company, et al.

Whether federal courts may exclude expert testimony essential to a plaintiffs case based on disputed discovery violations without making findings regarding willfulness, bad faith, or prejudice, and without considering less drastic sanctions, thereby effectively determining the merits through procedural rulings in violation of the Due Process Clause.

Whether federal district courts may grant summary judgment on technical causation issues requiring expert testimony after excluding such testimony on procedural grounds, creating a procedural sequence that denies meaningful opportunity to be heard.

Whether courts have a duty to investigate claims of discovery non-compliance when the record contains contradictory evidence, including documentary proof of compliance, before imposing case-ending sanctions.