Democratic Sen. Chuck Schumer of New York (File)Senate Democrats hit the brakes on a major funding bill Thursday, blocking money for the Department of Homeland Security and several other agencies. The 45-55 vote brings Washington dangerously close to a partial government shutdown, as current funding is set to run out this Friday. Their list of demands includes requiring officers to stop wearing masks, clearly identify themselves, and obtain warrants before making arrests. READ: Florida Sen. Rick Scott’s New Bill Demands Answers: Where Do Your Pills Really Come From? RELATED: Government Shutdown Clock Ticks: Schumer Demands Border Patrol Changes After ShootingThis would likely involve separating the homeland security funding from the rest of the bill to keep the government running for a short period while negotiations continue.