January 31, 2017—We the undersigned wish to affirm that freedom of expression and unfettered exchange of ideas are among the core tenets of our society as much as they are indispensable means of cross-cultural understanding and peaceful co-existence. Writers, translators and interpreters would be vulnerable to the far-reaching consequences of the travel ban; these professionals are crucial to the advancement of cross-cultural cooperation, and their efforts would be harmed by the corrosive effects of distrust and exclusion.