More than 50 Members of Parliament of the Spanish Socialist Workers' Party v State's Attorney on behalf of the Government of Spain, Action of unconstitutionality, STC 140/2018, ILDC 3313 (ES 2018), 20th December 2018, Spain; Constitutional Court

Whether the principle of universal jurisdiction could be limited by means of rules of admissibility or legal procedure.

Whether the Organic Law on universal jurisdiction violated the principles prohibiting arbitrariness and requiring legal certainty and equality before the law, in relation to the right of access to justice.