Those of us who believe that the Constitution means what it says have been arguing since the late 1970s that congressional efforts to strengthen national security by weakening personal liberty are unconstitutional, un-American and ineffective. The Foreign Intelligence Surveillance Act, which Congress passed in the aftermath of President Richard Nixon's use of the CIA and the FBI to spy on his political opponents, has unleashed demons that now seem beyond the government's control and are more pervasive than anything Nixon could have dreamed of.
This realization came to a boiling point last weekend when President Donald Trump accused former President Barack Obama of monitoring his telephone calls during the 2016 presidential election campaign. Can a U.S. president legally spy on a political opponent or any other person in America without any suspicion, probable cause or warrant from a judge? In a word, yes.