The United States and Indonesia will discuss on Monday how to advance a potential minerals partnership aimed a stimulating trade of the electric vehicle (EV) battery metal nickel, according to three people with direct knowledge of the conversations.

Next steps that could move the countries toward formal negotiations on the partnership will be discussed when Indonesian President Joko Widodo visits the White House for a meeting with U.S. President Joe Biden on Monday, according to one of the people.

The Biden administration is still concerned about environmental, social and governance standards in Indonesia and is examining how a deal might work, the sources said. The administration also plans further consultations with U.S. lawmakers and labor groups in the coming weeks, one of the sources said.