Sources of international law
Retroactive effect
if a law applies not only to the acts or facts that will happen from the time it entered into force on, but for the acts or facts prior the entering into force too
A law should not have retroactive effects for the stability and certainty of a legal system, although, if not codified in the Constitution, a legislative body might approve a law with retroactive effects when strictly needed
ITALY’S CASE: such principle is stated in the primary statute; in general a lawmaker may adopt a law with retroactive effects
Monism relationship
International law has immediate effects and the Constitution may choose if statutory law must be consistent with international law or if statutory law may repeal or derogate international law
Dualism relationship
International law must be specifically incorporated into demostic law by acts of the legislative or executive power
Criminal law, retroactive effects
Retroactive effect in general
Constitutional facts
= extraordinary or revolutionary historical-political events that successfully overthrew the existent Constitution, opening the path for the creation of a new one by a new formalized constituent power (which is potentially unlimited)
Codified Constitution
= Constitution which is written and kept in a single document as only source of constitutional law of a country, that creates a system of government and set of rights
Codified constitutional amendments
amendments= simple modifications of the original constitution operated by a constitued power, whose potential in such modifications is limited by the existent Constitution itself
Uncodified Constitution
unwritten or partly written Constitution held in different documents as multiple sources of law. Constitution= set of multiple rules of various nature (customs, charters, statutes, precedents)
Typical of pre-modern political regimes applies in the UK and former colonies
Rigid or Flexible Constitution
Voted or Octroyée Constitution
Long or short Constitution
Detailed or not detailed in shaping the system of government and of rights
“Original” Constitution
As interpreted and applied according to the original meaning at the time of adoption
“Material” Constitution
As interpreted and put into practice over time by the political forces
“Living” Constitution
As interpreted and applied over time by the Supreme or Constitutional Courts
“Sham” Constitution
Constitutional text formally in force but practically non-effective or scarcely effective in shaping a political regime
Elements of a modern-day Constitution