Civil Procedure textbooks across the country are now out of date.
The Supreme Court overturned that decision, sending the case back to federal court.
"We conclude that the phrase 'principal place of business' refers to the place where the corporation's high level officers direct, control and coordinate the corporation's activities," Justice Stephen Breyer wrote. "Lower federal courts have often metaphorically called that place the corporation's 'nerve center.' We believe that the 'nerve center' will typically be found at a corporation's headquarters."
Source: Law.com - In Unanimous Ruling, Supreme Court Says Business HQ Is Where Executives Are