Noun
a document indicating permission to do something without restrictions
Source: WordNetlaissez-passer
the media representatives had special passes Source: Internet
The inspectors furthermore travel on United Nations Laissez-Passer in which a sticker is placed explaining their position, and privileges and immunities. Source: Internet
Other types of travel documents Nansen passport for refugees (now defunct) * Laissez-Passer — Issued by national governments or international organizations (such as the U.N. ) as emergency passports, travel on humanitarian grounds, or for official travel. Source: Internet