Washington (CNN) Sen. Rand Paul, R-Kentucky, said he will do "everything humanly possible" to keep the Senate from reauthorizing the Patriot Act.

The GOP presidential candidate said in an interview with CNN's Alisyn Camerota that aired Tuesday on "New Day" that he will try to filibuster a reauthorization of Section 215 of the Patriot Act, which spawned the National Security Agency's collection of millions of Americans' phone records.

A handful of powerful Senate Republicans are pushing to reauthorize the Patriot Act without any reforms. Others in the Senate are pushing the USA Freedom Act, which would reform the Patriot Act's Section 215 and effectively end bulk data collection. The House quickly passed that bill last week.

But Paul and other privacy hawks want more reforms than those included in that bill, and Paul is calling for the end of that section of the Patriot Act, which is set to sunset at the end of the month.

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