Sen. Rand Paul, R-Ky., is prepared to filibuster the reauthorization of Section 702 of the Federal Intelligence Surveillance Act, which is up for a vote in the House to authorize a six-year extension, in an effort to get warrant requirement for Americans.

Section 702 permits the intelligence community to oversee foreign communications and will expire on Jan. 19. But those who oppose the program claim it permits warrantless collection of private information from U.S. citizens.