Have we been violating the constitution?

Article 1, Section 10, Clause 1 of the Constitution of the United States of America states:

"No state shall enter into any treaty, alliance or confederation; grant letters of marque and reprisal; coin money; emit bills of credit; make anything but gold and silver coin a tender in payment of debts; pass any bill of attainder, ex post facto law, or law impairing the obligation of contracts, or grant any title of nobility."

No state shall make anything but gold and silver coin a tender in payment of debts....