Except as provided in this section, a purchasing group is exempt from the following:
The exemptions specified in subsection (a) apply to the following:
A State may require that a person acting, or offering to act, as an agent or broker for a purchasing group obtain a license from that State, except that a State may not impose any qualification or requirement which discriminates against a nonresident agent or broker.
1So in original. Probably should be "discriminates".
42 U.S.C. § 9674