Obama signed the agreements Friday and planned to join a Rose Garden reception with business and labor leaders and workers who could potentially benefit from the new pacts. Obama also signed legislation to provide assistance to U.S. workers displaced because of the agreements.
Congress approved the agreements last week, just as South Korea's President Lee Myung-bak arrived in Washington for a state visit. Colombia's and Panama's legislatures have approved the deals. The South Korean National Assembly still has to approve the pact.
The Obama administration says the agreement will boost exports and contribute to job growth.