The shutdown stems from an unresolved fight over immigration enforcement, as Democrats and the White House failed to agree on whether Congress should impose new limits on federal agents in the wake of a backlash over President Donald Trump’s immigration enforcement surge in Minneapolis, including the shooting deaths of Alex Pretti and Renée Good. Democrats have insisted that any funding bill for the Homeland Security Department include requirements for judicial warrants before agents enter homes, clear identification and badge numbers for agents, limits on masks, expanded use of body cameras, new use-of-force standards, and explicit bans on racial profiling. Trump has signaled openness to some changes, but Democrats rejected the White House’s latest proposal this week as insufficient.