The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated....
"Effects" must be read, in conjunction with "papers",as to include electronic devices. Without a warrant, it is illegal to demand passwords. None but a bought and paid for judge would sign such a warrant, but I reckon there are quite a few just in DC that would do so without as much as a second thought. Anything to advance King Zero's destruction of America.
The Constitution is now interpreted by Leftists as a document that only allows the people what is specifically written (subject to interpretation by Leftist judges) and the government is only restricted by what they can't reinterpret from the document.