An interstate instrumentality is a State for Section 218 coverage purposes. An instrumentality
must have legal authorization to enter into an agreement. This rule applies only to
original agreements and not to modifications to existing 218 agreements. For agreements
and modifications exhibits see SL 40001.490A. The enabling acts of member States, the statutes, or other authority establishing
the instrumentality usually grants this authority.
NOTE: The consent of Congress is required for the creation of some interstate instrumentalities.