It has always been this way; but for the hundreds of years before computers that fit in the palm of your hand that have your entire life on them, it was to ensure you weren’t bringing dangerous goods or produce into the country. It was a physical search of physical items.

The issue now is that my entire life is literally on my phone.

The issue now is that there is a 100-mile ‘border search exception’ in place. https://en.wikipedia.org/wiki/Border_search_exception

Now, within 100 miles of the border, should CBP choose to, they can search me without a warrant and search everything in my phone, and even retain it if they’d like. If I want to challenge that, I need tens of thousands of dollars and time.

This is the very definition of an unreasonable search; but to change that we have to change the politicians and change the judiciary. It’s up to us, but until we get it changed, we may as well consider the 4th amendment a dead letter, and that means trouble for all of us.