The Trump administration on Tuesday proposed an economic relief package that would offer far skimpier federal unemployment benefits than what has been proposed by a bipartisan group of lawmakers, adding an element of uncertainty into the fragile stimulus negotiations, according to two people familiar with the matter.

Instead, Treasury Secretary Steven Mnuchin has proposed that lawmakers approve another stimulus check worth $600 per person and $600 per child, the people familiar with the plan said, speaking on the condition of anonymity to share details of private deliberations.

The new White House proposal was a nonstarter for Democrats and a sharp rejection of the bipartisan efforts that have brought the two parties closer to a compromise on a legislative package amid signs that the U.S. economy is deteriorating under the increasing strain of the coronavirus.

Under the bipartisan framework released last week by a group of moderate lawmakers, Congress would approve about $180 billion in new federal unemployment benefits for tens of millions of jobless Americans. That would be enough to fund federal supplementary unemployment benefits at $300 per week while extending various unemployment programs that are set to expire at the end of the year. The framework did not include another round of stimulus payments.