President Donald Trump’s volatile tariff threats are unleashing historic jumps in public anxiety.

Americans’ outlook on the economy soured a bit after two months of small gains, according to the University of Michigan’s consumer sentiment index, released Friday.

Americans’ outlook on the economy improved for the second straight month in September, bolstered by lower prices for long-lasting goods such as cars and furniture.

A surge in optimism by Democrats over the prospects of Vice President Kamala Harris lifted U.S. consumer sentiment slightly this month.

Consumer sentiment about the U.S. economy has ticked down but remains near a recent high, with Americans’ outlook largely unchanged this year.

Stocks slipped on Wall Street after a report showed that sentiment is souring among U.S. consumers.