1. What are the key features that define an 'effect of commerce' in payment and credit instruments law?
It is a negotiable, formal, and autonomous title evidencing a monetary claim.
Explication
An 'effect of commerce' is characterized by being negotiable, formal, and autonomous, serving as evidence of a monetary claim. It must meet specific formal requirements, be transferable through endorsement and delivery, and embody the right independently of underlying contracts.