‘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/Separation_of_church_and_state_in_the_United_States
deleted by creator
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.’
Is a state congress not congress?
You should read this, it answers your question.