Another campaign against foods made with genetically modified organisms has materialized now that a Washington couple that consumes only an organic, vegan diet has filed an initiative that asks the state's legislature to require GMO labels on such foods. The couple, Chris and Leah McManus in Tacoma, Wash., filed the initiative, I-522, after state lawmakers let GMO labeling legislation die earlier this year. They need to collect about 250,000 signatures from Washington voters by mid-January to force the legislature to reconsider the matter, and should the legislature not enact some sort of GMO labeling law, the initiative then would go to voters in November next year.