The company is a unit of the holding company Renco Group, whose billionaire CEO Ira Rennert is a longtime Republican donor who contributed more than $50,000 to House Minority Leader Eric Cantor (R-Va.)'s reelection this year.ADVERTISEMENTThe hearing comes as the Peruvian government prepares to decide next week whether to allow the company to continue to operate the smelter.Doe Run Peru acquired sm