yem trust
  
  
    
      
  
  
  
      
  
  
  
    
  
    
        
    
          
              
            
            
            
        June 10, 2016 -
        
  
        MapLight has compiled a database of all politically active "social welfare" nonprofits, many of which formed after a 2010 U.S. Supreme Court ruling loosening rules for political spending. It documents 650 such groups in the South, with some of the top-grossing ones part of the billionaire Koch brothers' formidable political spending machine.