No, waiting until a state acts, then deciding the method.
The Constitution says the Congress may prescribe the laws. That means the states must allow the Congress to set the process if they're going to carry out an act.
'Congress may by general Laws prescribe the Manner in which such Acts, Records and Proceedings shall be proved, and the Effect thereof.' And Congress has exercised this power, by Act of May 26, 1790....Congress exercised its power and issued its prescription 70 years before the WBTS.
The question is not whether Congress issued a prescription, but whether someone took his prescription.