Office of Hispanic Affairs Act of 1979 - Establishes the Office of Hispanic Affairs in the Executive Office of the President to: (1) advise the President on the concerns of Hispanic Americans; (2) examine the performance of and advise Federal departments and agencies in dealing with the economic problems facing Hispanic Americans; (3) coordinate executive branch activities to provide remedies for the problems of Hispanic Americans; and (4) act to assure the faithful administration of equal opportunity laws for Hispanic Americans. Requires the Director of the Office to report annually to the President and Congress on the performance of Federal departments concerning such problems and or the activities of such office. Permits the Director to appoint advisory task forces to provide advice and assistance in carrying out the functions of the Office. Prohibits the use of any funds authorized to carry out this Act to influence the outcome of any Federal election or voter registration activity.