A Brazilian national living in Milford pleaded guilty Tuesday in federal court in Worcester to transportation and possession of child sex abuse material, Massachusetts U.S. Attorney Leah Foley said.Jose Carlos Tavares Da Silva, 22, pleaded guilty to a single count each of transportation and possession of child pornography, Foley’s office said in a statement. Tavares Da Silva will be sentenced on Jan. 29, 2027, about a year after his arrest this …