Texas Monthly, Inc. v. Bullock
Texas exempted from its sales tax "[p]eriodicals that are published or distributed by a religious faith and that consist wholly of writings promulgating the teaching of the faith and books that consist wholly of writings sacred to a religious faith." Tex. Tax Code Ann. § 151.312 (1982). The question presented was whether this exemption violates the Establishment Clause or the Free Press Clause of the First Amendment when the State denies a like exemption for other publications.
The Court held that, when confined exclusively to publications advancing the tenets of a religious faith, the exemption runs afoul of the Establishment Clause, The Court did not reach the question whether it contravenes the Free Press Clause as well.