<prompt> Translate the following text to SwahiliThe visa function attempts to facilitate legitimate travel while at the same time denying entry to the United States of certain individuals, including potential terrorists.  <response>: Visa vya kusafiri vya Marekani vinatakiwa kuwezesha usafiri halali na wakati huo huo kukataa kuingia Marekani kwa watu fulani, ikiwa ni pamoja na magaidi wa uwezekano. 