SENATE Democrats were threatening last night to block legislation on funding for the Department of Homeland Security and several other agencies, raising the prospect of a partial shutdown if Republicans and the White House do not agree to new restrictions on President Donald Trump’s brutal “immigration enforcement” campaign. Following the deaths of two protesters at the hands of federal agents in Minneapolis, Senate Democrats set out a list of demands, including that officers remove their masks and identify themselves and also obtain warrants for arrests. If the demands are not met, the opposition said it was prepared to block the wide-ranging spending Bill, triggering a shutdown at midnight last night. One option would be to strip the funding for the Homeland Security Department from the larger Bill, as Mr Schumer has requested, and extend it for a short period to allow time for negotiations, the person said. The man arrested for Tuesday’s attack had posted online in support of the president.