Trump said Sunday: 'And through (Federal Emergency Management Agency), the federal government will be funding 100 per cent of the cost of deploying national guard units to carry out approved missions to stop the virus while those governors remain in command.
By the numbers:: Trump said at the briefing that he directed FEMA to supply "four large medical stations with 1,000 beds for NY, eight large federal medical stations with 2,000 beds for California and three large federal medical stations and four small federal medical stations with 1,000 beds for the state of Washington".
"Earlier today we requested a presidential Major Disaster Declaration and this afternoon we got it", said Newsom.
He added that he had approved one for Washington state as well and would do the same for California "very shortly".
The number of novel coronavirus cases around the world is over 328,000 worldwide with Italy and the United States behind China as the countries with the most cases of COVID-19 infections, according to data compiled by the Center for Systems Science and Engineering at Johns Hopkins University.
The National Guard has been activated in the three states with the biggest coronavirus outbreaks, President Trump said Sunday, promising that more help will follow.
Mr. Trump said he's sending "federal medical stations" to hard-hit states with thousands of beds to handle patients, and he's empowered the U.S. Army Corps of Engineers to build medical facilities in NY.
Senate Majority Leader Mitch McConnell has urged senators to "signal to the public that we're ready to get this job done".
NY state accounts for nearly half of the country's cases.
At Sunday's press briefing, Trump also praised private sector businesses that are stepping up to manufacture personal protection equipment such as masks, robe and gloves needed by hospitals and other health care providers.
Pence says the government hopes to have the backlog of existing tests - a milestone the White House hoped to reach on Monday - cleared by the middle of the week.
The Senate has refused to advance the coronavirus rescue package in a procedural vote with Democrats rejecting a draft from Republicans and pushing for more aid for workers.