Complex sentence: Deportations of Cambodians were legally permitted under that act but could not be effected due to the lack of an agreement between the United States and Cambodian governments; however, in March 2002, the two governments signed a treaty regulating deportation between the two countries.
Split into simpler sentences: Deportations of Cambodians were legally permitted under that act but could not be effected due to the lack of an agreement between the United States and Cambodian governments. In March 2002, the two governments signed a treaty regulating deportation between the two countries.