Global economic growth is expected to take a hit, in part as a result of President Donald Trump’s tariffs, if major nations remain mired in unresolved trade disputes, the Organization for Economic Cooperation and Development said in a report released Tuesday.

Donald Trump’s combative trade policies have tipped the world economy into a downturn, with the US among the hardest hit, the OECD said.

President Donald Trump’s turbulent tariffs are projected to cause a sharper slowdown in economic growth in the U.S. than expected.

US states and small businesses that won a ruling that most of President Donald Trump’s global tariffs are illegal want them blocked during the administration’s appeal, saying they’re suffering immediate harm from economic uncertainty around the levies.

The administration asked a U.S. appeals court to pause a second court ruling that found the president had exceeded his authority by imposing sweeping tariffs on imports.