The administration initially proposed the forced labor tariffs last month. ''Forced labor is a real and pervasive problem in our supply chains and demands serious enforcement. But they say the levies could make an impact on the problem of forced labor. Forced labor is defined by the International Labor Organization Forced Labor Convention of 1930 as ''all work or service which is exacted from any person under the menace of any penalty and for which the said person has not offered himself (or herself) voluntarily.'' European Union forced labor regulations due to go into effect later next year are also contributing, she said.