President Lee Myung-bak said Friday the recently-ratified free trade agreement with the United States was something South Korea must pursue for its survival in the increasingly competitive global economy no matter how much objection the government may face. \"We are a country that must sell products overseas. Of course, there are objections,\" Lee said during a lunch meeting with about 200 postal workers from across the country. \"But if it is the right thing to do, we should go ahead and do it even if there are objections. That\'s how a country moves forward.\" The trade deal passed through South Korea\'s National Assembly on Tuesday after years of diplomatic and political impasse since its first signing in 2007. The U.S. Congress approved the pact last month, and officials hope to have it take effect on Jan. 1. Lee\'s ruling party rushed the bill through parliament in a chaotic, tear gas-marred session, as opposition lawmakers have refused to endorse the pact, claiming it favors the U.S. The main opposition party has since vowed to boycott all parliamentary sessions in protest. Critics and anti-government activists have also held daily protest rallies in downtown Seoul, often clashing with riot police, and unfounded rumors have spread online claiming the agreement will hurt the everyday lives of South Koreans, including a spike in prices for medical treatment. \"Mysterious rumors are circulating about the FTA with the U.S.,\" Lee said. \"But all of those who are familiar with the issue are well aware that we have to do this in order to survive. The United States is the world\'s largest market, and we have to get to the market ahead of others if we are going to have an edge over Japan and China.\"