Nearly a dozen people tied to a decade-long marriage fraud network allegedly involving more than 1,000 sham unions face federal charges related to a scheme that charged Chinese nationals up to $100,000 to participate in fake marriages to U.S. citizens in an effort to secure green cards, federal prosecutors said Wednesday.A federal indictment unsealed in New York City names 11 defendants — all naturalized U.S. citizens from China and one green card holder — for their roles in the marriage and immigration fraud scheme.They were charged with conspiracy to commit marriage fraud, immigration docume...