The White House said President Obama signed three U.S., South Korea, Columbia and Panama.

At the same time, the president of the United States has also signed an extension of trade adjustment assistance (TAA) act, which helps workers who are injured in the growing global competition.

He also signed an extension of the trade preferences act to maintain U.S. commitment to trade and economic development, trade and economic development to raise the standard of living of the world's poorest people.

The White House said the agreements would increase American exports and employment opportunities in the United States.

The agreement between the United States and South Korea will support about 70000 jobs in the United States, and the US GDP will be increased by at least 11 billion dollars simply because of the expansion of exports.

As long as you work with Korea, Columbia or Panama agreement, if you produce, grow or provide products and services for these agreements, you will benefit from these agreements.

The White House said President Obama's historic move made a big step towards trade and employment.

We look forward to working with the Congress and the American people to pursue a balanced trade policy that will enable us producers to compete overseas and provide opportunities for more hardworking Americans to work in the United States.