text: Because LSC attorneys must withdraw whenever a question of a welfare statute 's validity arises , an individual could not obtain joint representation so that the constitutional challenge would be presented by a non-LSC attorney , and other , a504 ( a ) ( 16 ) is necessary to define the scope and contours of the federal program , a condition that ensures funds can be spent for those cases most immediate to congressional concern .
  
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  LSC attorneys are required by law to withdraw whenever a question arises .