> 2. Review past legal cases against travelers and identify what behaviors the government considers worthy of prosecution or harassment. Your secure setup must function without needing you to engage in those behaviors, even if it is less convenient as a result. This isn't perfect, as the government may decide some new behavior is prosecutable.
> 3. Consult with a lawyer and review your security procedures from a legal standpoint. All of the above is technical and practical advice, not legal counsel and no substitute for it.
Just don't go to the usa and if it's for professional reason, don't bring your personal phone.