Vietnam is considering amendments to its constitution in an apparent bid to bend freedom of worship laws to better fit the needs of the state, which in the past year has arrested Catholic, Protestant and Buddhist religious leaders. Protestant pastor Nguyen Trung Ton was arrested in January 2012 on unknown charges, according to Human Right Watch. Three Catholic Ha Mon Montagnard activists—Blei, Phoi, and Dinh Pset—were arrested in March. Two Hoa Hao activists, Nguyen Van Lia and Tran Hoai An, were arrested in April and July. Also in April Protestant pastor Nguyen Cong Chinh was arrested and charged with "undermining national unity." At least 15 Catholics affiliated with Redemptorist churches in Hanoi and Ho Chi Minh City, including bloggers Le Van Son and Ta Phong Tan, were arrested in July, August, and September.