Homeland Security Secretary Markwayne Mullin warned Sunday that national security threats have reached unprecedented levels following the expiration of Section 702 of the Foreign Intelligence Surveillance Act on Friday. The lapse eliminated warrantless surveillance authority targeting foreign individuals overseas, a tool the Biden administration and intelligence officials have relied on to monitor potential threats.

Mullin, the former Oklahoma congressman leading the Department of Homeland Security, framed the lapse as a critical vulnerability in U.S. counterterrorism operations. Section 702 allowed federal agencies to conduct surveillance without warrants on non-U.S. persons located outside American borders. Intelligence agencies have cited the provision as essential for monitoring terrorist organizations, foreign adversaries, and cyber threats.

Congress allowed the authority to expire Friday night after negotiations over reauthorization stalled. Republicans and Democrats disagreed over surveillance guardrails and oversight mechanisms. Some lawmakers sought stronger protections for Americans whose communications might be incidentally collected during foreign surveillance operations. Others opposed stricter requirements they said would handicap intelligence gathering.

The collapse reflects deeper fractures within Congress over the balance between security and privacy. Senator Ron Wyden, an Oregon Democrat and surveillance critic, has long opposed Section 702 without substantial reforms. Republicans like House Speaker Mike Johnson initially resisted Democratic demands for additional warrant requirements for querying databases containing American communications.

The intelligence community has warned that the lapse hampers counterterrorism operations during a period of elevated global instability. Officials argue the tool proved vital in detecting foreign agents planning operations against U.S. targets and identifying cyber threats from state actors.

Mullin's comments escalate pressure on lawmakers to pass reauthorization legislation. Congress faces growing urgency to restore the surveillance authority while negotiating remaining disputes over civil liberties protections. The outcome will shape U.S. intelligence capabilities and establish a template for future surveillance policy debates. Both chambers must reconcile