For better or worse, the tax system is here for everyone. Why should religions be the only institutions immune to it? Everything you said happens in America, just change religion for nationality (sanctions) or race. I don't see why religion should be different. Moreover, religions persecution also happens in the USA, but by other means. Catholics have been persecuted in the past, the same happened against jews during a period, and more recently to islam. The idea of tax exemption only happens to benefit the well entrenched religions: evangelical churches, mormonism in Utah, the Catholic church. It also helps up and coming scams such as scientologists, who take advantage of the provisions of the law.