Congress is moving to approve a short-term funding bill for the Homeland Security Department that leaves intact Obama administration immigration policies Republicans vowed to repeal.

The three-week stopgap measure would allow lawmakers to keep the Homeland Security Department running at a time of heightened threats worldwide — even if it does little more than postpone the fight for another day.

The bill would extend current funding levels for the department for three weeks, until March 19. Without action, DHS would begin to shut down at midnight Friday, furloughing 30,000 workers. Another 200,000 would be deemed essential and continue to report to work, albeit without pay.

Some House conservatives insist they won't support the measure, but others argue it preserves their ability to fight President Barack Obama's executive actions deferring deportations.