The Fourth Amendment is very clearly written and no amount of "interpretation" can change its meaning or intent. Greenwald's book is likewise succinctly written and his intent is easy to understand: to expose the crimes of our government. In the name of "combatting terrorism" the NSA and other branches of government routinely violate the Constitution. And to cover up these crimes they lie with impunity and with the collusion of the mainstream media. The evidence presented by Snowden through Greenwald is overwhelming. Excellent.