Emmer Questions Costs of Mandatory GMO Labeling Laws March 24, 2015 On March 24, 2015, Congressman Tom Emmer (MN-06) questioned agriculture industry officials during their testimony before a House Agriculture Committee hearing on the costs and impacts of mandatory biotechnology laws. Permalink: https://emmer.house.gov/2015/3/emmer-questions-costs-mandatory-gmo-labeling-laws