secret far-right society infiltrates government?

Nope, it's not a story of the Bush Administration, but rather El Yunque in México. 

A secret organization born in the Cold War and determined to overthrow an authoritarian government outlives the regime and instead begins to undermine a democratically elected administration in hopes of installing a modern theocracy.

Luis Paredes Moctezuma, the former mayor of Puebla in central Mexico, said that very scenario exists in the administration of President Felipe Calderón and the National Action Party, or PAN. He asserted that the party has been slowly infiltrated by the radical group over decades.