Le bloc de constitutionnalité est constitué de textes ayant valeur constitutionnelle, par opposition à une conception qui restreindrait les textes constitutionnels à la seule Constitution en vigueur. C'est une expression idiomatique officielle de la langue juridique française. Je pense que la

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Impact on personal freedoms:
Prior to 1971, though executive, administrative and judicial decisions had to comply with the general principles of law (jurisprudence derived from law and the practice of law in general), there were no such restrictions on legislation. It was assumed that unelected judges and other appointees should not be able to overrule laws voted for by the directly elected French parliament.

In 1971, a landmark decision by the Constitutional Council (71-44DC[2]) cited the preamble of the Constitution and its references to the principles laid in the Declaration of the Rights of Man and of the Citizen as a reason for rejecting a law that, according to the Council, violated one of these principles. Since then, it is assumed that the "constitutional block" includes not only the Constitution, but also the other texts referred to in its preamble: the Declaration, but also the preamble of the 1946 Constitution (which adds a number of "social rights", as well as the equality of males and females) and the Environment Charter of 2004.

Since then, the possibility of sending laws before the Council has been extended. In practice, the political opposition sends all controversial laws before it.