GOP's Solyndra probe threatens to ensnare Energy Secretary ChuBy Andrew Restuccia - 09/29/11 05:00 AM ET The controversy over a $535 million loan guarantee to the now-bankrupt California solar firm Solyndra is threatening to dim the star of Energy Secretary Steven Chu, a physicist and Nobel Prize winner who has rarely been thrust into the political spotlight. Republican lawmakers have set their sites on Chu, who for three years has managed to avoid being dragged into a litany of political battles waged by Republicans and the White House on energy and environmental issues. The GOP has for weeks lobbed a...