What is Fourth Amendment Restoration Act?

Legal Definition
The Fourth Amendment Restoration Act is a proposed bill introduced by Senator Rand Paul on June 7, 2013. It "provides that the Fourth Amendment to the Constitution shall not be construed to allow any U.S. government agency to search the phone records of Americans without a warrant based on probable cause."

The bill was authored in light of the Global Surveillance Disclosures of 2013, which Sen. Paul said "represents an outrageous abuse of power."
-- Wikipedia