Rio Tinto's (ASX:RIO) planned acquisition of Arcadium Lithium (ASX:LTM) cleared another hurdle with the receipt of the Committee on Foreign Investment in the United States' clearance, according to a Wednesday statement from Arcadium Lithium.

The proposed deal has so far either received or waived merger control clearance in Australia, Canada, China, Japan, South Korea, the UK, and the US. It has also met the UK's investment screening approval.

The transaction remains subject to investment screening approvals in Australia, Canada, and Italy, as well as other customary closing conditions, per the statement.

The deal is expected to be completed before mid-2025.