So be it. I used to say that the reason I valued my privacy was not that I did not trust my government _today_, it was the fact that data would be available to every potential authoritarian government _tomorrow_.
Welp, today has become tomorrow, and yeah, I'd _absolutely_ rather just have my devices seized than have the contents of my phone dumped into a database that can be searched without a warrant, for the next 15 years.
Rights (like the 4th amendment) that are not exercised are not upheld. I'm sure the threat of having one's devices stolen (let's be clear, that's what this is), is enough to deter many people. For myself, my next course of action would be to contact the ACLU and sue the government for violating the 4th amendment.