David H. Koch
  
  
    
      
  
  
  
      
  
  
  
    
  
    
        
    
          
              
            
            
            
        March 8, 2012 -
        
  
        The leading conservative advocacy group and its affiliated foundation have spent tens of millions of dollars attacking Democrats over the past couple of years, and now AFP is pledging to spend hundreds of millions to defeat President Obama. Where is all that cash coming from?