“The Kosher Slaughtering Bill” [Poland] [Unconfirmed]
Commentary from other sources:
1) Bill enacted into law on January 1, 1937 that placed limits on the practice of the kosher slaughtering of cattle by Orthodox Jews. This bill allowed the Polish government to regulate the supply of cattle to kosher slaughterers. Jurisdictions in which Jews numbered less than three percent of the total population were permitted to outlaw kosher slaughtering altogether.
Emanuel Melzer: No Way Out: The Politics of Polish Jewry, 1935-1939 (Cincinnati: Hebrew Union College Press, 1965) p. 90