 Also in 1989, the Soviet government announced its intention to join the Berne Convention, but the USSR was dissolved before that plan could be realized.The changing economy in the Soviet Union led to the conclusion of a trade treaty between the USSR and the United States, signed by presidents Gorbachev and Bush on June 1, 1990.In this treaty, the U.S. imposed a number of measures in the field of intellectual property in exchange for granting the USSR most-favoured-nation status.