rtokens: The California Avocado Commission -- which has spearheaded the opposition to lifting the ban -- said new data the group submitted to the Agriculture Department last spring shows the department underestimated the pest problem in Mexico and have urged that the agency reopen its study of the issue .
pos: JJ NNS CC NNS MD VB TO VB IN JJ NNS VBN IN DT JJ CC NNP NN NNS .
tokens: Mexican growers and distributors would have to abide by strict rules established by the Mexican and U.S. agriculture agencies .
ltokens: Under the proposal , only imports of export-quality avocados growing in approved orchards in Michoacan , Mexico , the country 's main avocado area , would be allowed .