With the National Security Agency ending its program to collect bulk metadata on Sunday, Sen. Marco Rubio, R-Fla., warned that Americans' safety is in jeopardy.

Rubio, a presidential candidate and member of the Select Committee on Intelligence, decried the program's expiration, which was established by the USA Freedom Act in June.

"When the clock strikes midnight, Americans will be less safe because of a presidential leadership void and gross misinformation that combined to kill critical intelligence programs at a time of rising terrorist threats to the United States and our allies," said Rubio. "By abandoning these programs and enacting the USA Freedom Act, President Obama and his allies in Congress are unilaterally disarming the U.S. in the fight against terrorism and take away a valuable early warning tool from people whose sole duty is to keep us safe."

Calling attention to the recent wave of terror attacks in Paris that left 130 dead and hundreds more injured, Rubio said "now is the worst possible time to undermine the very tools that keep our people safe."

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