Global_JJ trade_NN1 is_VBZ a_AT1 complex_JJ creature_NN1 that_CST requires_VVZ cooperation_NN1 across_II national_JJ borders_NN2 and_CC between_II governments_NN2 and_CC businesses_NN2 ._. 
But_CCB what_DDQ it_PPH1 delivers_VVZ is_VBZ simple_JJ :_: jobs_NN2 and_CC higher_JJR living_NN1 standards_NN2 ._. 
Growth_NN1 in_II trade_NN1 since_CS World_NN1 War_NN1 II_MC had_VHD added_VVN an_AT1 average_NN1 of_IO about_RG $1_NNU trillion_NNO a_AT1 year_NNT1 to_II America_NP1 's_GE income_NN1 (_( in_II 2003_MC dollars_NNU2 )_) ,_, according_II21 to_II22 economists_NN2 at_II the_AT Peter_NP1 G._NP1 Peterson_NP1 Institute_NN1 for_IF International_JJ Economics_NN1 ._. 
And_CC if_CS the_AT world_NN1 's_GE remaining_JJ barriers_NN2 to_TO trade_VVI and_CC investment_NN1 were_VBDR to_TO fall_VVI ,_, global_JJ trade_NN1 would_VM add_VVI another_DD1 $500_NNU billion_NNO to_II domestic_JJ wealth_NN1 creation_NN1 each_DD1 year_NNT1 ._. 
That_DD1 's_VBZ the_AT good_JJ news_NN1 ._. 
The_AT bad_JJ news_NN1 is_VBZ that_CST the_AT importance_NN1 of_IO trade_NN1 and_CC its_APPGE value_NN1 to_II our_APPGE economy_NN1 is_VBZ being_VBG lost_VVN amid_II the_AT current_JJ global_JJ economic_JJ crisis_NN1 ._. 
There_EX is_VBZ an_AT1 increasing_JJ number_NN1 of_IO voices_NN2 calling_VVG for_IF protection_NN1 policies_NN2 ._. 
For_IF the_AT first_MD time_NNT1 in_II decades_NNT2 ,_, trade_NN1 is_VBZ declining_VVG across_II the_AT world_NN1 ._. 
That_DD1 should_VM worry_VVI every_AT1 American_JJ ._. 
There_EX is_VBZ a_AT1 mistaken_JJ belief_NN1 that_CST America_NP1 can_VM go_VVI it_PPH1 alone_RR --_JJ that_CST by_II closing_VVG its_APPGE borders_NN2 to_TO trade_VVI it_PPH1 can_VM retain_VVI jobs_NN2 and_CC grow_VVI independent_JJ of_IO the_AT world_NN1 ._. 
But_CCB that_DD1 is_VBZ n't_XX true_JJ ._. 
The_AT economy_NN1 will_VM not_XX grow_VVI in_II isolation_NN1 and_CC enacting_VVG laws_NN2 that_CST require_VV0 governments_NN2 to_TO "_" Buy_VV0 American_JJ "_" or_CC protecting_VVG specific_JJ industries_NN2 --_NN1 such_II21 as_II22 agriculture_NN1 --_NN1 from_II trade_NN1 competition_NN1 will_VM only_RR hurt_VVI economic_JJ growth_NN1 ._. 
Trade_NN1 barriers_NN2 force_VV0 us_PPIO2 to_TO pay_VVI more_DAR than_CSN we_PPIS2 need_VV0 to_II for_IF goods_NN2 and_CC services_NN2 and_CC make_VV0 it_PPH1 harder_JJR for_IF our_APPGE companies_NN2 to_TO compete_VVI ._. 
If_CS national_JJ leaders_NN2 turn_VV0 to_II protectionism_NN1 for_IF domestic_JJ political_JJ reasons_NN2 ,_, we_PPIS2 'll_VM likely_RR see_VVI policies_NN2 that_CST do_VD0 lasting_JJ damage_NN1 to_II global_JJ trade_NN1 flows_NN2 ._. 
