 The ground breaking book exposed unsanitary conditions in the Chicago Meat Packing industry which caused enormous public outrage.President Theodore Roosevelt commissioned the Neill-Reynolds' report, written by labor commissioner Charles P. Neill and sociologist James Bronson Reynolds, which confirmed many of Sinclair's horrifying tales.In response to both "The Jungle" and the Neill-Reynolds report, Congress passed the Federal Meat Inspection Act ",(21 USC 601 et seq.)"