KEY POINTS
  • New research suggests that the decline in foreign approval of American leadership between 2016 and 2017 lowered American exports by at least $3 billion.
  • "Countries whose leadership is approved abroad tend to sell more exports, holding all else equal," says UC, Berkeley economist Andrew Rose.
  • The United States, which had been the top-rated global power in 2016, fell 18 percentage points during President Trump's first year in office.
Italian Prime Minister Paolo Gentiloni, Germany’s Chancellor Angela Merkel, U.S. President Donald Trump and European Council President Donald Tusk attend the G7 summit in Taormina, Sicily, Italy, May 26, 2017.

President Donald Trump's unpopularity overseas could be lowering American exports by billions of dollars as foreign demand for U.S. goods moves in tandem with international respect for the Oval Office, according to a new study from the University of California, Berkeley.

The study looked at imports and exports data from over 200 countries between 1948 and 2017 along with Gallup approval polling data for the leadership of five exporters by participants in 157 countries between 2006 and 2017.