"in meyer v. nebraska, 262 u. s. 390 (1923), and bartels v. iowa, 262 u. s. 404 (1923) =, this court, in opinions by mr. justice reynolds, held that the due process clause of the fourteenth amendment prevents states from forbidding the teaching of a foreign language to young students. statutes to this effect, the court held, unconstitutionally interfere with the liberty of teacher, student, and parent." what is the reasoning in this argument?