It is sometimes suggested that the Founders did not consider property rights important because the term “property” was mentioned only once in the Constitution. The truth is that the Founders were concerned about a range of human values, but property rights were high on their list. Their Constitution and Bill of Rights protected property in many ways: * The Founders were worried that Congress might use the tax system to loot property owners in some states for the advantage of other states. Accordingly, they required that direct taxes (mostly importantly property and income taxes) be apportioned among the states (Article I, Section 2, Clause 3 and Article I, Section 9, Clause 4). They also required that indirect taxes, such as import duties, be levied uniformly (I-8-1 and I-9-6). They flatly denied Congress power to tax exports (I-9-5). The Constitution and Property Rights – Tenth Amendment Center.