new york/san francisco new narrowly tailor temporary travel ban president donald trump sign monday difficult challenge successfully court legal experts say say since order long cover legal residents exist visa holders make waivers possible business diplomatic travelers challengers likely hard time find people unite state legally claim harm thus so-called stand sue trump first executive order sign jan. 27 ban travelers seven muslim-majority nations iran iraq libya somalia sudan syria yemen 90 days halt refugee admission four months bar syrian refugees indefinitely hasty implementation cause chaos protest airports order hit two dozen lawsuits many claim discriminate muslims new ban go effect march 16 remove iraq add categories people would exempt order trump administration say executive order necessary national security reason also list group people could eligible waivers include travelers previously admit unite state work school seek visit live close relative would face hardship deny entry infants young children adoptees people need medical care employees u.s. government international organizations among others exceptions make new order lot hard attack say andrew greenfield immigration attorney fragomen law firm washington d.c. trump promise make new directive hard fight court many change expect dot cross try anticipate litigation might result say stephen yale-loehr cornell law school professor specialize immigration say opponents might still able find plaintiffs u.s. citizen could potentially sue government deny waiver foreign spouse arbitrary reason example legal challenge original order state washington successful prevent carry federal judge seattle appeal court san francisco rule washington could claim stand part order adversely affect legal permanent residents know green card holders state 100 businesses include many best-known tech company file brief court argue employees harm bob ferguson attorney general washington state say monday likely decide next litigation step week consult state universities businesses potential harm need homework thoughtful ferguson say u.s. department justice file seattle federal court monday say new order apply overseas without visa foreign nationals outside country u.s. visa protections u.s. constitution people already legal experts say rosemary jenks director government relations numbersusa conservative group favor less immigration overall say new order would leave state washington argue behalf unidentified foreign nationals screen vet process yet u.s. authorities would pretty big stretch jenks say unlike old order new one lay detail specific countries select say attorneys challenge ban include american civil liberties union say still question whether ban justify national security reason revisions address concern order discriminate base religion adam lauridsen keker van nest attorney san francisco represent students challenge trump first order note revise directive still target muslim-majority countries stephen legomsky chief counsel u.s. citizenship immigration service previous obama administration point statements trump want muslim ban evidence bake change past say legomsky say however mean inevitable legal challenge ultimately successful likelihood reach u.s. supreme court slam dunk trump 's new travel ban raise bar legal challenge