>Federal investigators secretly seized two months of phone records for reporters
>and editors of The Associated Press in what the news organization said Monday
>was a “serious interference with A.P.’s constitutional rights to gather and report
>the news.”
>
>http://www.nytimes.com/2013/05/14/us/phone-records-of-journalists-of-the-associated-press-seized-by-us.html?_r=1&pagewanted=all&


1st: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."


If it was done without a warrant, I would say it violates the 4th Amendment:

4th: "The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."