Section-1

The Citizen/Alien × Resident/Nonresident Matrix

The IRC distinguishes individual taxpayers along two axes: U.S. citizenship (citizen vs. alien) and U.S. residence (resident vs. nonresident). The four resulting cells map onto real Code sections with distinct tax bases — citizens and resident aliens taxed worldwide under § 1, nonresident aliens taxed on U.S.-source / effectively-connected income under § 871. The Matrix is real; what the alternate-tax movement adds — moving U.S. citizens in the fifty states into the nonresident-alien cell — is not in the Matrix.