Construction-equipment manufacturers and other business groups are gearing up to push for House approval in September of a trade bill that observers say would expand U.S. exports to Russia.

The legislation would grant Russia permanent normal trade relations (PNTR) with the U.S. That PNTR status would mean U.S. construction-equipment manufacturers would be eligible for tariff cuts and mechanisms for resolving trade disputes that Russia is putting in place as a new member of the World Trade Organization (WTO).