President Donald Trump's renewed demand for U.S. taxpayer funding of his proposed U.S.-Mexico border wall was threatening again on Tuesday to bring on a budget standoff and a partial government shutdown, leaving Congress just 11 days to act.

With time running short, Trump and Republican leaders of the U.S. House of Representatives huddled at the White House. Border security was expected to be high on the agenda.

By Dec. 7, Congress must pass this spending bill, estimated at $312 billion, to keep some government agencies funded, including the Department of Homeland Security, which polices the border and immigration.