Not even just immigration. The US detains people based on the content of their phones. Like beloved childrens authors https://www.theguardian.com/commentisfree

Not even just immigration. The US detains people based on the content of their phones. Like beloved childrens authors https://www.theguardian.com/commentisfree/2017/feb/28/in-that-moment-i-loathed-america-i-loathed-the-entire-country https://www.theguardian.com/commentisfree/2017/feb/28/in-tha... Or meme havers https://hyperallergic.com/us-agencies-say-they-have-no-records-of-tourist-flagged-for-jd-vance-meme/ https://hyperallergic.com/us-agencies-say-they-have-no-recor... The advice is generally, that if you absolutely have to go to the US, that you start a fresh email account, and take an empty/clean phone signed in with your fresh email account through border security, then load a backup to your phone once through.