As a UK citizen arriving in the US for SXSW I had my phone's text messages searched. It was extremely alarming but what can you do? If you say anything they'll

As a UK citizen arriving in the US for SXSW I had my phone's text messages searched. It was extremely alarming but what can you do? If you say anything they'll just turn you around and say "see ya". Travelling to the US is a very hostile and stressful experience.