Some of the most famous constitutional amendments are the First Amendment to the United States Constitution which added the freedom of speech , religion , press , and protest , the third Amendment to the Constitution of Ireland , which let Ireland join the European Union , and the amendment of the German constitution as part of the German reunification process in 1990 .
Some of the most famous constitutional amendments are the First Amendment to the United States Constitution which added the freedom of speech , religion , press , and protest , and the Third Amendment to the Constitution of Ireland , which let Ireland join the European Union .