• 15 US states and a Texas county sued the FAA over environmental review.
• States claim the FAA failed to analyze potential environmental impacts.
• FAA's proposed rules would allow certified drone operators to fly beyond visual line of sight.
• Drone delivery operations are already happening in some states under waiver process.

This lawsuit may indicate growing concerns about the environmental impact of expanded drone operations, which could slow the adoption of commercial drone delivery services. The FAA's proposed rules suggest a significant expansion of drone use cases, which could benefit industries like manufacturing and healthcare, but may also raise privacy and noise concerns.