The Court of Appeals for the Seventh Circuit has upheld the constitutionality of an Illinois reciprocity provision that requires that nonresident attorneys pass that state's bar examination prior to admittance, but waives that requirement with respect to former nonresident attorneys who later establish residence in Illinois.
Sestric v. Clark, 765 F.2d 655 (7th Cir. 1985).
Richard T. Hamilton Jr.,
Constitutional Law - Privileges and Immunities Clause - Commerce Clause - Equal Protection Clause,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol24/iss4/9