General info on Visa Policy:
https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa/visa-policy_en
General Info on Visa Information System:
https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa/visa-information-system_en
Regulation (EC) No 767/2008 of the European Parliament and of the Council of 9 July 2008 concerning the Visa Information System (VIS) and the exchange of data between Member States on short-stay visas (VIS Regulation)
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:02008R0767-20230803
Regulation (EC) No 810/2009 of the European Parliament and of the Council of 13 July 2009 establishing a Community Code on Visas (Visa Code)
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:02009R0810-20200202
Council Decision 2008/633/JHA of 23 June 2008 concerning access for consultation of the Visa Information System (VIS) by designated authorities of Member States and by Europol for the purposes of the prevention, detection and investigation of terrorist offences and of other serious criminal offences
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:02008D0633-20190611
Regulation (EU) 2018/1806 of the European Parliament and of the Council of 14 November 2018 listing the third countries whose nationals must be in possession of visas when crossing the external borders and those whose nationals are exempt from that requirement
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:02018R1806-20230515
Regulation (EU) 2017/1370 of the European Parliament and of the Council of 4 July 2017 amending Council Regulation (EC) No 1683/95 laying down a uniform format for visas
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32017R1370
Regulation (EU) 2021/1134 of the European Parliament and of the Council of 7 July 2021 amending Regulations (EC) No 767/2008, (EC) No 810/2009, (EU) 2016/399, (EU) 2017/2226, (EU) 2018/1240, (EU) 2018/1860, (EU) 2018/1861, (EU) 2019/817 and (EU) 2019/1896 of the European Parliament and of the Council and repealing Council Decisions 2004/512/EC and 2008/633/JHA, for the purpose of reforming the Visa Information System
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32021R1134
Regulation (EU) 2021/1133 of the European Parliament and of the Council of 7 July 2021 amending Regulations (EU) No 603/2013, (EU) 2016/794, (EU) 2018/1862, (EU) 2019/816 and (EU) 2019/818 as regards the establishment of the conditions for accessing other EU information systems for the purposes of the Visa Information System
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32021R1133
