The National Trust for Historic Preservation, a nonprofit chartered by Congress to further the historic preservation policy in the U.S., has written a letter urging the Trump administration to pause the demolition of the East Wing of the White House until a review of President Trump's ballroom plans is completed.

As the government shutdown crosses the three-week mark, Democrats are increasingly calling on President Donald Trump to get more involved in finding a solution.

The president said Republicans "will not be extorted" into giving in to Democrats' demands, an indication that any end to the shutdown remains far off.