期间去过美国几次，墨西哥一次，中国两次

看官网tip这么写：
Question 7L
Answer the question by checking yes or no. The following examples may help you answer the question:
Example 1
In the past four (4) years, the minor took one (1) trip to France that lasted 200 days. The answer to the question would be “Yes” and a police certificate from France for the minor would need to be provided.
Example 2
In the past four (4) years, the minor took 10 trips to the United States of America (USA). Each trip lasted three (3) weeks, for a total of 210 days. The answer to the question would be “Yes” and a police certificate from the USA for the minor would need to be provided.

请问，难道我必须要找美国/中国/墨西哥的边境管理部门说要出入境的证明吗？中国和墨西哥找哪里要啊？好麻烦！