Issues of sub-national referendums regulated at the national level

Argentina
Answer
None
Source
Constitution of the Argentinian Nation (Constituciónde la Naci?n Argentina)
Law 24.747 onAgenda initiative (1996-11-27) [Ley 24.747 Iniciativa legislativa popular]
Law 25.432 onReferendum (2001-05-23) [Ley 25.432 Consulta popular vinculante y novinculante]
Comment
No provision was found in this regard