A screenshot taken from C-Span's live broadcast shows U.S. President Donald Trump signing a series of executive orders to extend certain COVID-19 economic relief in New Jersey, the United States, on Aug. 8, 2020. (Xinhua)

Trump's orders will likely face a legal challenge, as Congress has the constitutional authority to determine federal funding.

WASHINGTON, Aug. 8  -- U.S. President Donald Trump on Saturday signed a series of executive orders to extend certain COVID-19 economic relief after negotiations between Republican and Democratic lawmakers fell apart.

One of the president's four orders will extend extra unemployment benefits through the end of the year at a reduced level of 400 U.S. dollars per week, instead of the 600 dollars approved by Congress in late March, which expired at the end of July.

The other orders will reinstate the federal moratorium on evictions, which also expired at the end of July, defer student loan payments through 2020, and defer certain payroll tax obligations.