As to the law of the land (what the Congress & Supreme Court say it is - your legal opinion is not binding), since the data itself is collected by private service providers who are only bound by Law and legal rulings witch means they must provide data on subpoena or a search warrant (see the 4th amendment), do we really expect that company data to be kept private? Is it OK for them to sell it to another company for whatever purpose the company chooses?...
So let's get this right. The US Government through the NSA violated and broke the law of the land. The US Constitution. They violated the right to privacy and violated the right against illegal search and seizures ... And should Snowden go to jail, then should not the members of the government go to jail as well for their violation of the constitution? Since the constitution is the law of the land....?
In a memo dated March 14, 2003, an official in the Bush administration stated "... our Office recently concluded that the Fourth Amendment had no application to domestic military operations". The administration believed that any search or surveillance conducted by the National Security Agency of US citizens communicating with foreign nationals abroad was immune to a Fourth Amendment challenge. To protect the telecommunication carriers cooperating with the US government from legal action, the Congress passed a bill updating the Foreign Intelligence Surveillance Act of 1978 to permit this type of surveillance.
Given the Supreme courts ruling: n Katz v. United States, 389 U.S. 347 (1967), the Supreme Court ruled that a search occurs when 1) a person expects privacy in the thing searched and 2) society believes that expectation is reasonable. Maybe those two criteria are what we should be talking about.