The United State Supreme Court held that state hospital rate-setting statutes which impose a significant indirect burden on Employee Retirement Income Security Act plans do not "relate to" the plans sufficiently to invoke preemption of state laws.
New York State Conference of Blue Cross & Blue Shield Plans v. Travelers Insurance Co., 115 S. Ct. 1671 (1995).
Janice M. Smith,
Employment Law - Employee Retirement Income Security Act - Preemption of State Law,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol34/iss1/9