There are criminals in the states that have German heritage and even German born citizens that operate in the states, but nothing organized like you are referring. Most of the documented German criminals were connected to LCN, Russian OC ( but these were the descendants from German WW2 prisoners in the camps of Russia) Japanese, Chinese, and Hispanic OC groups. Yes there were German OC groups in the states at one time, but they either died out or merged with other OC groups at the end of Prohibition.