US consumer confidence tumbled in December from the previous month amid Americans' growing uncertainty over the economic outlook in the year ahead. The Conference Board's consumer confidence index declined by 8.1 points in December to 104.7, below the 113.2 expected by economists surveyed by Bloomberg. In December, 21.3% of respondents expected fewer jobs to be available in the next six months, up from 17.9% the month prior. Meanwhile, expectations for income decreases and worse business conditions in the next six months also moved higher. The potential impact of President-elect Donald Trump's policies remained top of mind for consumers in December, per the Conference Board.