The constitutional authority of Congress to forbid discrimination in employment is based on the power of Congress to regulate interstate commerce.
Congress attempts to stop sex discrimination by educating on employers. There are also reporting laws that may help with stopping discrimination.
Congress used the authority found in the Commerce Clause of the Constitution to pass the Civil Rights Act of 1964. The act was signed into law by Lyndon B. Johnson.
1985
The Necessary and Proper Clause
Constitutional courts
Give Congress the constitutional authority to levy income taxes.
Congress had no way to retaliate.
Sixteenth Amendment (Amendment XVI)
Congress can REPEAL any law, constitutional or not. Only the Court can overturn a law because it is unconstitutional.
The necessary and proper clause
The congress of Vienna attempted to reestablish the old constitutional monarchies through an elimination of nationalism. :)
The delegates to the Constitutional Convention were not authorized to write a new Constitution. They were only supposed to propose amendments to the Articles of Confederation. In that sense they had no authority at all to write a whole new constitution to replace the Articles of Confederation.