American Muslims make up around 1% of the US population. Fundamentalist American Muslims who want to live under anything but a secular, pluralist, Constitutionalist democratic republic only make up a tiny percentage of that 1%; about the same as the percentage of American Christians who are Christian Nationalists, and want to live under Biblical Law in a fundamentalist Christian theocracy.
There are only three American Muslims in Congress, and none there who believe in anything but free, democratic, Constitutional principles. Which can't be said for every American Christian in our government.
QAs for society and culture, if American Muslims can convert others to their religion, how is that any different than Christians, Jews, Hindus, Wiccans, atheists, or others doing the same?
It's a little thing called "freedom of religion"...