Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

A form of juxtaposed border control, where you clear customs and immigration before departing.

A form of juxtaposed border control, where you clear before departing. Most commonly found when departing for the from and

U.S. Customs and Border Protection Preclearance Locations

history | excerpt history