Liberalism is once again under siege. The most recent challenge comes from a modern variant of integralism that is especially popular among Catholic intellectuals. Contrary to previous critiques of liberalism, Catholic integralism confronts liberalism not merely as a political phenomenon, but as a comprehensive worldview with hidden metaphysical and theological implications. It views the function of political rule as existing so as to order human beings to their final cause. Our goal in this paper is to hold a mirror to these two worldviews using the lens of religious freedom. We think this inquiry is important for several reasons. Liberals argue that there is no room for religious freedom in an integralist regime, for one, because of its belief that the state can properly use coercion, including religious coercion, in order to promote expressly Catholic ends. Integralists on the other hand characterize liberalism as playing a con game in that it attempts to draw everyone “to engage in a dialogue within a supposedly pluralistic open market of religions even as it has already filled the terms of that dialogue with a liberal theory of religion. This article investigates new Catholic integralism and its critique of liberalism and aims to answer whether a liberal idea of religious freedom is possible under an integralist regime. To do so, we first sketch the respective views of liberalism and Catholic integralism on each other, with an emphasis on integralism. For integralism, liberalism is not merely a political phenomenon, but a comprehensive worldview with hidden metaphysical and theological implications. Integralism views the function of political rule as ordering human beings to their final cause. We specifically delve in foundational Catholic principles to guide rulers when governing, prudence and subsidiarity, to establish how their application should influence freedom of religion within an integralist regime. We conclude that religious freedom might be possible under a soft integralist regime and that the answer remains unclear for hard integralist ones, as the ultimate answer lies with the Church.