170.4—What is the effect of this part on existing tribal rights?
               		
               	 	
               	 	
               	 	               	 	               	 	               	 	               	 	
               	 	
    
         This part does not:
    
    
        
        (a) 
         Affect the sovereign immunity from suit enjoyed by tribes;
     
    
        
        (b) 
         Terminate or reduce the trust responsibility of the United States to tribes or individual Indians;
     
    
        
        (c) 
         Require a tribe to assume a program relating to the IRR Program; or
     
    
        
        (d) 
         Impede awards by other agencies of the United States or a State to tribes to administer programs under any other law.