The US Senate failed for a fifth time on Monday to pass spending measures that would reopen the government.
Competing proposals by Democrats and Republicans were both shot down, failing to meet the 60-vote threshold required.
Donald Trump had reiterated threats of mass layoffs if another vote failed earlier in the day. Thousands of federal employees were furloughed or ordered to work without pay when funding for their agencies ended five days ago.
But the US president hinted that he was open to trying to end the impasse and possibly strike a deal with Democrats who are sticking to demands that the legislation address healthcare. Republicans are pressing for a "clean" funding bill.
The Democratic-led bill to extend the government's funding failed first on Monday with a 45-50 vote. Its Republican counterpart then fell short at 52-42.
