"No money in the piggy bank" says California's Newsom

After negotiations broke down between the White House and top Democrats in Congress over how best to help Americans cope with the toll of the crisis Trump said signed orders he said would provide an extra $400 per week in unemployment payments, less than the $600 per week passed earlier in the crisis.

Trump said 25% of it would be paid by states, whose budgets have been hard hit by the crisis.

"That cost would burden the state of California, its taxpayers, roughly seven hundred million dollars per week," Newsom said.

"The state does not have an identified resource of 700 million dollars per week that we haven't already obliged. There is no money sitting in the piggy bank of the previous CARES Act to be re-prioritized or reconstituted for this purpose. It simply does not exist," he said.

Some of the measures in Trump's orders were likely to face legal challenges, as the U.S. Constitution gives Congress authority over federal spending.