A federal judge has ruled
(PDF link) that a U.S. National Security Agency program to wiretap telephone and Internet traffic of U.S. residents is unconstitutional, illegal and must be stopped
... The program allowed the NSA to monitor communications between U.S. residents and people in other countries with suspected ties to terrorist group al Qaeda, without getting court-ordered warrants. The program, authorized by President George W. Bush in 2002 in the wake of the Sept. 11, 2001, terrorist attacks, violates the U.S. Constitution's guarantees of freedom of speech and association and its prohibitions against unreasonable searches and seizures
... violates the separation of powers clause in the Constitution
... as well as the Foreign Intelligence Surveillance Act, which set courts to issue warrants for wiretaps focused on counterintelligence.