The states that banned marijuana were primarily in the south and southwest, where economics and prejudice played a major role. During the great depression, migrant workers from Mexico were no longer needed nor welcome. People feared that Mexican immigrants were undercutting American workers for jobs so they were trying to get them to go back to Mexico. Since many of these immigrants smoked marijuana, it was thought that banning marijuana would help. So, in 1937 Congress passed The Marijuana Tax Stamp Act. The Act itself did not actually criminalize possession or use of marijuana, but required anyone doing so to pay roughly one dollar to receive the stamp. In the 1930âs, this would have been prohibitively expense to migrant farm workers, however, it didnât matter ..the government was only issuing them to doctors and dentists. This created a catch-22 for recreational users ..the penalty for not having the stamp was a fine of up to $2000 and five yearsâ imprisonment. This put recreational users at great risk, and for the Mexican immigrant, it meant certain deportation.