U.S. manufacturing was steady in February, but a measure of prices at the factory gate jumped to near a three-year high and it was taking longer for materials to be delivered, suggesting that tariffs on imports could soon hamper production.

The Institute for Supply Management said output remained fairly steady, but tariffs on raw materials threaten U.S. growth.

Worries about duties on imports dominated commentary from manufacturers in the Institute for Supply Management (ISM) survey on Monday, with most saying the tariffs being pushed by President Donald Trump against trading partners such as Canada,

Two makes it a streak. Finally. The U.S. manufacturing industry, a key driver of the U.S. economy, grew for the second consecutive month in February. Growth has been a struggle, but things are improving–slowly.

The S&P Global U.S. Manufacturing Purchasing Managers’ Index advanced to 52.7 in February from 51.2 in January, beating the 51.6 expected. More on the U.S. Economy Weekly Market Pulse: No Tariffs Required Asia And Europe Seem Less Keen About The Dollar Than North America The 1-Minute Market Report March 1,