First, the same Congress that created the Bill of Rights (first 10 Amendments) also used US Treasury funds to buy 20,000 Bibles, I believe importing them from Europe.This is yet another common misconception. It was originally moved by the Continental-Confederation Congress (not the First Congress) to purchase the bibles in 1777 for the Revolutionary War, nearly 14 years before Amendment I was ratified. The bibles were ultimately never purchased. This was no doubt a good thing during the start of the nation. Christian morals are indeed the foundation of our country. The issue wasn't really religion as an enemy, but the religious endoctrination in politics and government.
However, Shariah law is not a religion. Islam is a broad-based POLITICAL and governmental system, which includes a religion in it. Therefore, allowing free exercise of religion is not the same as adopting the political and legal system known as Shariah law.You are absolutely correct. Consider the Muslim "faith" to be similar to the "Church of England" as a religion, governing authority, and social caste system all rolled into one. And we know just how "loved" this system was by a group of religious anti-British outcasts.
Third, if political correctness causes politicians to accept Islam and Shariah law, then the First Amendment will not make any difference. Already, there is a double standard. Islam is openly taught in our public schools, while people scream about any mention of Christianity.Double standards are indeed an issue to deal with. However double standards rolling the other way due to Christian zealots is just as dangerous. If we allow religious organizations the same favoritism, the threat of endoctrination is equally dangerous not because of the religion, but because of the control. The balance is to follow the Constitution, something that's clearly not happening in this and plenty of other scenarios. If we just follow it we're golden.
Fourth, properly understood Shariah Law is itself unconstitutional as a legal or governmental system because it discriminates against women and for other reasons like that.Good point. The U.S. government fought the Latter Day Saints back at the turn of the 20th century for decades over issues such as these. Alas, they are still here and still alive and well. It will be interesting to see just how this shakes out over the next 20 years, if the corrupt government doesn't bury us before then. What the government should have been doing all along is blocking the Muslim faith here as a recognized religion as it undermines many of the Rights in the BOR. There have been Supreme Court cases revolving around this issue and they are unanimous with regards to their opinions (religions that are against the Constitutional BOR are not religions in the context of the First Amendment).