India, March 18 -- Automakers and part suppliers are waiting for clarity on US President Donald Trump's trade policy before deciding how to proceed with US investments.

"Something concrete has to be put on the table," a Bloomberg report quoted Volkswagen CEO Oliver Blume as having said during the company's annual press conference last week.

As of now, the company is primarily looking at options in the US Southeast, according to the report, which added that its previous options were to expand a plant in Tennessee, use a factory it's planning in South Carolina, or boost operations in Mexico.

Meanwhile, Paslin, which makes assembly lines for car manufacturers, is rethinking how to best utilize a plant it recently opened in Mexico due to t...