nogales arizona 16 hours day tomatoes pepper cucumbers mangoes grow mexico flow north border checkpoint nogales arizona help ensure year-round supply fresh produce across unite state city build cross-border trade year 330,000 truck 75,000 train cars carry 17 billion worth goods move nogales accord u.s. customs border protection economists estimate trade support nearly one three job range workers inspect goods forklift operators unload distribution center many ways nogales represent flip side free trade deal batter industrial cities midwest job outsource manufacture plant shut cities donald trump promise throttle call unfair competition resonate profoundly presidential campaign also represent potential risk new trade barriers could pose businesses residents along border tall rust fence separate nogales arizona nogales mexico cities intertwine locals call single name ambos nogales nogales office trump consider 20 percent tax import mexico one several ideas review washington promise renegotiate north american free trade agreement dozen city officials employers workers interview say border tax enact could choke flow import mexico describe chain events would harm economy threaten local job lead high price u.s. consumers president trump take good look effect whatever go end real problem say nogales mayor john doyle join lawmakers arizona new mexico texas denounce import tax plan letter u.s. lawmakers food autos electronics go ways across border checkpoint sometimes mexican mangoes melons come north california almonds apples washington state go south u.s. car part send mexican factories import back finish vehicles hundreds products come back forth port entry nogales doyle say trump administration tell reuters tax deal would protect u.s. interest american people rest assure policy president trump pursue design increase wag american workers reduce u.s. trade deficit strengthen economy work white house official say email since 1994 implementation nafta trade mexico unite state rise six fold country export 40 billion 1993. last year unite state import 294 billion goods mexico export 231 billion back u.s. census data show nationwide nearly million job tie trade mexico importers job dependent low-cost goods accord study non-partisan wilson center mexico institute santa cruz county surround nogales produce import industry support businesses account 22 percent job accord 2013 report economists university arizona trade support factories across border account another 10 percent workforce report lead author vera pavlakovich-kochi say 20 percent border tax would create strict barriers trade five decades addition trump proposal 20 percent tax import mexico republican lawmakers put forth plan would cut corporate income tax 20 percent 35 percent exclude export revenue taxable income impose 20 percent tax import proposals split corporate america group major exporters include boeing co general electric co pfizer inc form coalition support import tax time large retailers include target corp best buy co inc counter tax would raise consumer price hurt businesses seat second-floor office warehouse nestle roll hill outskirts town produce trader jaime chamberlain say business mexico lifeblood nogales bring pound mexican produce u.s. border town one large industries employment lose say chamberlain board member fresh produce association americas vote trump pro-business socially conservative agendas lobby state leaders oppose tax chamberlain parent begin family business 1,000 loan 1971. sister j-c distribute inc employ 25 people handle 120,000 pound mexican tomatoes week taco bell addition order major company kroger co sysco corp. company warehouse among six dozen facilities interstate 19 miles north nogales town square bring fruit vegetables worth 3.3 billion year accord fresh produce association local officials residents economists warn tax could reverberate across local economy example 20 percent border tax could put 17 million produce trade-related fee custom brokerage freight forward truck permit risk lot unintended consequences say santa cruz board supervisors chairman manuel ruiz domino effect many local business people expect mexico fight back 20 percent tax could start trade war mexico see impose unilaterally say ricardo crisantes vice president market sales wholesum harvest part mexico-based company offices nogales organic farm side border company representatives say border tax could drive company shift farm unite state also could send import demand part latin america would bypass nogales restaurant store owners say tax would make already tough time even bad would huge say karla galindo 35 own rancho grande restaurant nogales husband local business owners say sales already hurt war word officials mexico unite state people afraid spend money galindo say `` would huge `` u.s. border town confront possible import tax