2)non-legislative:bureaucratic regulations; presidential executive orders,controversial,does not have clear constitutional basis,Congress tried to override presidential executive order between 1939-83 when the court determined that Congress does not have such power.Presidential executive orders can be tested by court,but the court rarely challenges the president's authority in issuing presidential executive orders.The president should be careful in issuing presidential executive orders.2) non-legislative: bureaucratic regulations; presidential executive orders, controversial, does not have clear constitutional basis, Congress tried to override presidential executive order between 1939-83 when the court determined that Congress does not have such power. Presidential executive orders can be tested by court, but the court rarely challenges the president's authority in issuing presidential executive orders. The president should be careful in issuing presidential executive orders