If the value of the gift exceeds $100, you will be required to pay duty. If you have goods you intend to sell in the U.S., they will most likely be subject to duty, unless they are eligible for duty-free treatment under an international trade agreement (GSP, NAFTA, etc.).
Specialization of labor is a powerful force in an economy, benefiting small and large businesses alike. Workers produce more when they occupy specialized roles, so businesses can offer higher quality products at lower prices.
DEFINITION of 'Specialization'. A method of production where a business or area focuses on the production of a limited scope of products or services in order to gain greater degrees of productive efficiency within the entire system of businesses or areas.