The new communist regime again withdrew Auschnitt's citizenship, before pronouncing him guilty of treason. This charge referred to Auschnitt's involvement with anti-communist resistance groups, including his allegedly financing Nicolae Petrașcu's Iron Guard cells. Stripped of his Romanian properties, Auschnitt relaunched himself as an entrepreneur in the plastics industry, and obtained American citizenship. His final political activities were as a sponsor of the Romanian National Committee, which split into pro-Auschnitt and pro-Malaxa factions, respectively led by Constantin Vișoianu and Nicolae Rădescu.