In February 1995, reports from Washington prepared by Harvard professor Joseph Nye indicated their plans of deploying over 100,000 soldiers in Japan and South Korea. On 4 September 1995, a 12-year-old local girl was raped by three U.S. servicemen, and protests were held against the military's establishments in the area. Ōta considered these two events as hindrance to peace in the prefecture. From 1996 to 1998, he actively worked to establish cordial relations with U.S. On 8 September 1996, he organized a plebiscite in his prefecture which brought results that about 60 percent of citizens who supported reduction of military bases. On 10 July 1996, he appealed to the Supreme Court of Japan to relocate various military bases to mainland. As governor, he rejected permissions of U.S. military asking to extend lease for use of private land. This led to conflict between local and central government. The central government amended laws which gave it the power to endorse such documents.