House Democrats overwhelmingly voted against a bill to fund the Department of Homeland Security on Thursday, effectively extending a partial government shutdown now in its 21st day amid escalating threats from Iran. The House passed the measure 221-209, with only four Democrats joining Republicans in support, but the Senate fell short of the 60 votes needed to advance identical legislation for the third time, stalling efforts to end the impasse.

The DHS shutdown began on February 14 after Congress failed to agree on appropriations amid disputes over immigration enforcement reforms. Democrats have demanded restrictions on Immigration and Customs Enforcement and Customs and Border Protection agents, including body-worn cameras, bans on masks, judicial warrants for arrests, and stricter use-of-force policies, following the January 24 fatal shooting of Alex Pretti by CBP agents in Minneapolis. Republicans passed a bill funding DHS through September 30 that included some Democratic priorities like cameras and training, but rejected broader curbs.

Republicans intensified pressure by citing recent U.S. and Israeli strikes that killed Iran's Supreme Leader Ayatollah Ali Khamenei, prompting warnings of Iranian retaliation on U.S. soil. A DHS intelligence assessment highlighted risks of targeted attacks, cyberattacks, and lone-wolf actions by Iran proxies, though large-scale assaults were deemed unlikely. House Speaker Mike Johnson stated, "Military action in Iran makes it all the more urgent and crucial to have a fully staffed, fully funded Department of Homeland Security." Senate Majority Leader John Thune added that the enhanced terror threat from Iran and its affiliates made full funding vital.

Democrats dismissed the GOP tactics. House Minority Leader Hakeem Jeffries called the push "insane," accusing President Trump of launching an unauthorized war in Iran to justify unrestricted immigration enforcement. Senate Democrats proposed funding non-enforcement DHS components like TSA, FEMA, and cybersecurity separately while negotiating ICE reforms later. The blockade persisted even after Trump ousted DHS Secretary Kristi Noem, appointing Sen. Markwayne Mullin as a replacement.

The shutdown has furloughed workers at TSA, the Coast Guard, and FEMA, delayed paychecks, paused cybersecurity operations, and halted infrastructure inspections, though ICE and CBP remain operational via prior funds. It follows a four-day full government shutdown earlier in February over similar issues. Negotiations continue, but both parties remain entrenched as threats evolve.