This system, rooted in the mandate of Article I, Sec.
The power to impose taxes, direct or indirect, is granted by Article I, section 8, clause 1.
Article I, Section 9 lists eight specific limits on congressional power.
Article I: Never under any circumstances to acquire or retain biological weapons.
Under Article I, only Congress can make the laws.
Article I, Section 3 declared that senators were to be appointed directly by state legislatures.
Article I, s8, grants the Congress the power to regulate commerce among the States.
Article I, Section 9 has more than one clause so addressed.
Article I, Section 9 mandated that the importation of slaves end in 1807.
Constitutional qualifications to be a Senator are specified in Article I, section 3.