The trade adjustment assistance act of 2002 focused mainly on assisting:
u. s. firms to establish export markets around the world.
other nations to become familiar with, and adjust to, u. s. products.
workers displaced by imports or plant relocations abroad.
businesses who wish to globalize and compete in the world market.

The Trade Adjustment Assistance Act is focused mainly on assisting:

workers displaced by imports or plant relocation abroad

Explanation:

The Trade Adjustment Assistance Act was brought into existence to reduce and minimize the damaging outcomes resulted to some of the sectors of the economy of the United states. Workers, firms, farmers and communities are the four components of Trade Adjustment Assistance.  

agriculture and oil. natural resources, industry.