The ACLU filed a lawsuit on behalf of Louisiana families to challenge what it called a "blatantly unconstitutional" new state law that requires the Ten Commandments to be displayed in every classroom.
‘The Establishment Clause acts as a double security, prohibiting both control of the government by religion and political control of religion by the government. By it, the federal government of the United States and, by later extension, the governments of all U.S. states and U.S. territories, are prohibited from establishing or sponsoring religion.’
https://en.wikipedia.org/wiki/Establishment_Clause
‘The Establishment Clause acts as a double security, prohibiting both control of the government by religion and political control of religion by the government. By it, the federal government of the United States and, by later extension, the governments of all U.S. states and U.S. territories, are prohibited from establishing or sponsoring religion.’