guadalupe mexico/tornillo texas president donald trump plan end policy catch release illegal immigrants catch free pending hear could hit wall immigrant advocate warn one plan build mexican border ok mr trump want release show go hold show build say ruben garcia director annunciation house roman catholic charity el paso texas give shelter migrant families garcia group receive 400 migrants release u.s. immigration customs enforcement monday wednesday day trump announce tough measure curb illegal immigration release want catch release detention center enough space say garcia underscore one potential problem end practice catch release almost half immigrants apprehend u.s. officials central american families children tiny number detention space available categories immigrants trump announce plan increase number family detention center establish take time could face legal challenge legal experts immigration say reuters review u.s. customs border patrol data show accelerate trend central american families hand border release await deportation decision asylum request last three months 2016 number people almost families children hand agents along u.s.-mexican border rise quarter versus period year cbp data show agents apprehend total 136,670 people cross mexican border high number since 2008 48 percent unaccompanied children families children nearly 45,000 parent children apprehend october-december quarter border currently bed around 3,300 people category immigrants mostly karnes dilley detention center texas accord ice data 2016. families central america immediately turn around send back mexico lack space detention center parent children mean almost migrants mostly flee poverty violence honduras guatemala el salvador fit electronic ankle bracelet give court date release many end request asylum process take five years resolve immigration lawyers say even without request asylum take years deport families unite state bunged-up immigration court trump could expand policy practice former president barack obama use military base temporarily house immigrants fort bliss base el paso house thousands children since september example could also explore ways refit exist facilities help handle flood families build detention center like karnes dilley take long also typically face legal challenge civil right lawyers concern live condition trump could also seek expand obama program aim increase number central american asylum seekers make initial claim home country long term could ask mexico let immigrants make asylum claim although tie two countries seriously fray trump vow force mexico pay wall southern u.s. border garcia shelter director acknowledge trump finally successful open thousands detention space families would slow number come word would spread probability lock put plane become much high garcia say central americans usually deport unite state flight back home countries number turn-ins hand u.s. authorities high around mcallen texas jump particularly noticeable el paso sector border mexico 60 percent immigrants apprehend october december children families years quiet spot immigration map el paso saw 5,200 families apprehend period nearly three time many compare period year ago 1,972 double number unaccompanied children u.s border patrol agent jose romero observe trend first-hand along tall rust-colored fence punctuate rural border cross stretch 40 miles 65 km el paso beyond tornillo texas lot traffic see right family group ... come across look agent right away turn romero say call change past people try sneak undetected want apprehend fence finish 2010 end abruptly near pecan orchards irrigation ditch texan side across rio grande mexico drug war-torn valle de juarez cotton-farming region litter burned-out home last february mexican president enrique pena nieto obama secretary commerce penny pritzker open major new border cross tornillo texan side guadalupe mexican side hop boost trade countries november truck traffic still light across bridge instead ice open temporary hold center 500 place white tent asphalt u.s. side bridge help process surge number migrant families apprehend u.s. officials surround area trump 's plan halt 'catch release migrants could hit wall