The Secretary of State, acting through the United States Commissioner, International Boundary and Water Commission, United States and Mexico (hereafter in sections
277g to
277g–3 of this title referred to as the “Commissioner”), is authorized to conclude agreements with the appropriate representative of the Ministry of Foreign Relations of Mexico for the purpose of correcting the international problem of pollution of the Rio Grande caused by discharge of raw and inadequately treated sewage and other wastes into such river from the border cities including but not limited to Ciudad Acuna, Nuevo Laredo, and Reynosa, Mexico, and Del Rio, Laredo, and Hidalgo, Texas.