Hi,

U.S. Customs and Border Protection (CBP) wants to begin asking foreign visitors to the United States for their social media accounts. This proposal threatens not only the free speech rights of foreign visitors, but also those of their families and anyone who’s spoken with them via social media.

http://www.freepress.net/blog/2016/08/10/a-dangerous-proposal-from-us-customs-and-border-protection

That's what Thailand has done, too.

Poomjit