Someone else took a picture of the drop down menu:

https://www.flyertalk.com/forum/checkpoints-borders-policy-d...

It seems to match the list that appeared in the news earlier: https://www.nytimes.com/2018/03/30/world/americas/travelers-...

> The proposal covers 20 social media platforms. Most of them are based in the United States: Facebook, Flickr, Google+, Instagram, LinkedIn, Myspace, Pinterest, Reddit, Tumblr, Twitter, Vine and YouTube. But several are based overseas: the Chinese sites Douban, QQ, Sina Weibo, Tencent Weibo and Youku; the Russian social network VK; Twoo, which was created in Belgium; and Ask.fm, a question-and-answer platform based in Latvia.

I applied for a visa waiver for a short term trip to the US a couple of weeks ago. They asked about social media, but the question was optional. Surprisingly, Github was also on the list there. I’m not sure what border patrol agents will think of my pull requests - but so long as that question is optional I’m going to opt out of answering it.

Obviously they’ll deny you entry if you don’t adhere to the national coding style. It’s about time a nation has the courage to enforce curly braces on a new line.