Source: Keeping secrecy the exception, not the rule: An issue for both consumers and businesses – Microsoft on the Issues
We believe these actions violate two of the fundamental rights that have been part of this country since its founding. These lengthy and even permanent secrecy orders violate the Fourth Amendment, which gives people and businesses the right to know if the government searches or seizes their property. They also violate the First Amendment, which guarantees our right to talk to customers about how government action is affecting their data. The constitutional right to free speech is subject only to restraints narrowly tailored to serve compelling governmental interests, a standard that is neither required by the statute being applied nor met by the government in practice here.