Ahead of Vietnamese President To Lam’s upcoming visit to New York in September, HRF co-signs a joint letter with @PENamerica @pressfreedom @RSF_inter and other organizations to @SecRubio , urging the US Department of State to call for the release of Vietnamese writers and journalists Le Huu Minh Tuan, Pham Chi Dung, Nguyen Tuong Thuy, and Pham Doan Trang.