The larger portion of the disputed area in the Bering Sea was agreed to belong to the United States; the United States Congress quickly ratified the agreement, but the Soviet Union failed to ratify the agreement before its collapse in 1991. Many in Russia have criticized Mikhail Gorbachev and Edvard Shevardnadze for rushing the deal, ceding the Russian fishing rights and other maritime benefits, and insist on renegotiation. The United States continues efforts to enforce the boundary line against the encroaching Russian fishing vessels, in order to build up the evidence of "general state practice" that the 1990 agreement is indeed the marine border between the two countries.[4]