What must crew members present to Customs and Immigration?

The requirement for crew members to present a valid and signed passport to Customs and Immigration is crucial for ensuring compliance with international travel regulations. A passport serves as a universally accepted form of identity and citizenship verification, which is essential for entering a new country and for presenting oneself to governmental authorities.

In addition, the requirement that the passport be signed is a legal stipulation that confirms the document is legitimate and properly belongs to the bearer. This prevents issues of identity fraud and ensures that the individual is authorized to travel.

While other options may include various forms of identification, they do not meet the specific international requirements set forth by customs and immigration authorities, which mandate the use of a valid, government-issued passport for international travel. Thus, the only acceptable form of identification that meets all legal and regulatory requirements during customs checks is the properly signed passport.