How Executive Orders Issue 2
Authority for Executive Orders4
　U.S. Constitution5
　Congressional Delegation 6
　　Before Issuance6
　　After Issuance 7
Judicial Review of Executive Orders 8
　Determining Whether the President May Act 8
　Determining the Scope of Congress’s Delegation12
　Determining the Scope of the Executive Order 13
Modification and Revocation of Executive Orders15
　Modification or Revocation by the President 15
　　Revocation by Present Administration 15
　　Revocation by Later Administrations 15
　Modification, Abrogation, or Codification by Congress17
　　Modifying or Abrogating Specific Orders 17
　　Codifying Specific Orders 19
　　Imposing Broader Limitations on Executive Orders 19
Other Presidential Directives20
Conclusion21