Chartered by Congress under Article I, Section 8 (Necessary and Proper Clause).
Maryland and other states taxed the Bank's operations, challenging federal authority.
Could states tax a federally chartered institution? Did the Necessary and Proper Clause grant Congress implied powers beyond enumerated ones?
Right to tax any entity within its borders; Bank not essential to federal powers.
Bank a valid exercise of implied powers; state taxation would undermine federal supremacy.
The Supreme Court's ruling established implied powers and federal supremacy.