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.
媒体说谎也是free speech rights, 当然如果中伤,可以依靠libel and slander laws告。
当然联邦宪法是联邦层次的,各州有自己的宪法,都有类似的保护言论自由的provision规定州政府也不得立法限制言论自由。