Washington (CNN) Only minutes after President Donald Trump gave his first prime-time address from the Oval Office, House Speaker Nancy Pelosi and Senate Democratic leader Chuck Schumer took to the airwaves to blame him for the partial government shutdown, which has now stretched to its 18th day, the second-longest ever.

The back-to-back speeches deepened the sense that a solution won't present itself any time soon, revealing yet again the lack of support on Capitol Hill for Trump's wall -- and the President's rigid response to the Democrats' unwillingness to haggle.

"President Trump must stop holding the American people hostage, must stop manufacturing a crisis and must reopen the government," Pelosi said.

For weeks, the President and congressional Democrats have been at an impasse over his demand for $5.7 billion in federal funding to build a wall on the US-Mexico border. Last year, Congress passed most of its spending bills, but 25% of the federal government's spending has lapsed during the fraught negotiations.

About 800,000 federal workers are not getting paid during the shutdown, which affects the Departments of Homeland Security, Justice, Agriculture, Treasury, State, Interior, Transportation, Commerce and Housing and Urban Development, as well as agencies like the Food and Drug Administration, Environmental Protection Agency and Internal Revenue Service.

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