Senate Democratic Leader Chuck Schumer and Republican Leader John Thune are digging in ahead of this week’s deadline to keep the government open, showing little evidence of budging even as both sides have agreed to meet with President Donald Trump at the White House on Monday. Republicans say that Democrats need to help them pass a simple extension of government funding by Tuesday night to avoid a shutdown, and they will not agree to negotiate on it even as they will need a bipartisan vote to pass it. Democrats say they want immediate talks on health care and that they are willing to shut down the government if they don’t get concessions.