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Lawmakers on Tuesday bluntly warned the Obama administration it will lose its sweeping surveillance powers if major changes aren’t made at the National Security Agency (NSA).

Members of the House Judiciary Committee said Section 215 of the Patriot Act, which is set to expire next summer, will be dissolved unless the administration proposes broad changes to the NSA’s collection of phone records.

Rep. James Sensenbrenner Jr. (R-Wis.), who wrote the Patriot Act and its two reauthorizations, told Deputy Attorney General James Cole that the administration was on the hook to find a workable alternative.