6月1日后，从加拿大回美国的人必须出示护照(或其他官方认可的身份证明文件)，而以前一张驾照就已足够。

Since June 1st those returning to the United States from Canada have been required to show a passport (or another approved identity document), where a driving licence was always sufficient.

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身份证明文件包括护照，身份证，驾驶执照或其它具有相似性质之文件。

Proof of identity includes passport, identity card, driving license and any other documents with a similar nature.

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护照照片页扫描件。未满18周岁的申请者，须提交在华法定监护人署名的委托证明文件。

A scanned copy of the passport photo page. Applicants under the age of 18 shall submit relevant documents of entrusted legal guardians in China.

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