geneva unite nations refugee agency international organization migration iom call trump administration saturday continue offer asylum people flee war persecution say resettlement programme vital u.s. president donald trump friday put four-month hold allow refugees unite state temporarily bar travelers syria six muslim-majority countries say move would help protect americans terrorist attack need refugees migrants worldwide never great u.s. resettlement program one important world two geneva-based agencies say joint statement trump stop entry travelers syria six nations iraq iran sudan libya somalia yemen least 90 days say administration need time develop stringent screen process refugees immigrants visitors iom unhcr say remain commit work u.s. administration towards share goal ensure safe secure resettlement immigration program strongly believe refugees receive equal treatment protection assistance opportunities resettlement regardless religion nationality race say resettlement place provide every country vulnerable refugees require special medical treatment available first country asylum vital agencies say 30 countries take part programme start vet unhcr agencies say hope u.s. continue strong leadership role long tradition protect flee conflict persecution 25,000 refugees resettle unite state october year-end unhcr programme vulnerable agency say friday host u.s. federal government agencies involve extensive background check carry unhcr spokeswoman vannina maestracci tell brief think fair say refugees come unite state resettle vet individuals enter unite state say iom want migration legal safe secure include destination countries spokesman joel millman say hope 90 days temporary time stand ready assist way millman tell reuters television concern delay might force people start begin generally speak long long process probably 90 days something people will wait wait years already u.n. agencies urge trump allow refugees entry