There is no separation of church and state under sharia. If your religion is Islam, then sharia is your law. There are communities within the US with a high concentration of Islamic followers, who are pushing for sharia to be recognized as their penal code, and not the laws under the US Constitution. They are arguing that sharia is similar to the 1st Amendment, this couldn't be further from the truth.
One of the main purposes of the First Amendment is to prohibit the government from establishing a state religion. But the main purpose of Islam is precisely to establish itself as the state religion. In other words, the First Amendment is un-Islamic. Islam’s reason for existence is to be the established religion in every nation.
The next time someone says we need to be more tolerant, more understanding, more accepting of Islam and Sharia Law, ask them, “What part(s) of the Constitution are you willing to abandon in order to accommodate Sharia Law?”