Venezuela has signed agreements with two U.S. energy firms to operate in the country as a growing number of international oil and gas companies are vying to return to the world's biggest crude resource holder. The Venezuelan government of interim President Delcy Rodríguez has just signed agreements with U.S. firms Hunt Overseas Oil Company and Crossover Energy, which plan to operate in the Orinoco Belt, the South American country's prime oil province of heavy and extra heavy crude. The deals were signed in the presence of Jarrod Agen, President…