The U.S. Commerce Department on Monday inked a draft agreement with Russia’s state nuclear energy company to reduce imports of uranium from Russia over the next 20 years in a bid to boost domestic mining and nuclear energy.

The Commerce Department and Rosatom initialed the draft amendment to the 1992 Russian Suspension Agreement to prevent dumping, extending that deal to the year 2040 and gradually reduce the amount of uranium the U.S. imports from Russia for enrichment from 20% to 15% starting in 2028.