The U.S. oil giant is negotiating a deal to pump oil in Venezuela, ending a standoff with its socialist rulers and marking a victory for Trump.

The largest U.S. energy company, Exxon Mobil, is in talks to acquire rights to produce oil in Venezuela nearly two decades after it was effectively expelled from the country, according to several people familiar with the matter.

The deal would be a major victory for Trump, who has declared the country’s vast natural wealth open to American businesses.

If finalized, the deal would mark Exxon’s return to a country with one of the world’s largest oil reserves after years of legal battles that had turned the oil giant into a nemesis of Venezuela’s ruling Socialist Party.