America has been doing this for years. I recall a story from a few years ago about an Irishman refused entry because he'd posted something on social media about

America has been doing this for years. I recall a story from a few years ago about an Irishman refused entry because he'd posted something on social media about how he was going to "destroy LA". Ah, here it is: https://www.joe.ie/uncategorized/irish-tourist-banned-from-us-over-joke-destroy-america-tweet-31740 https://www.joe.ie/uncategorized/irish-tourist-banned-from-u... https://www.stuff.co.nz/travel/6342775/US-ejects-tourists-over-joke-tweets https://www.stuff.co.nz/travel/6342775/US-ejects-tourists-ov... This was back in 2012.