The main aim of the thesis is to determine factors that influence USA trade policy. Secondary objectives are to specify the influence of USA trade policy on their economy and also to determine the trends of major trade policy measures of USA from 1990 until now. Theoretical part is about theory of trade policy in general and application on USA trade policy. Practical part of the diploma thesis includes the facts of US economy, trade policy, multilateral and bilateral agreements and territorial and commodity trade structure. Practical part of the thesis covers also perspectives of future of USA and responses to the objectives set out in the introductory part. In the thesis have been used methods of observation, synthesis and analogies.