They’re waiting for HR1 to pass.
There’s a provision in HR1 for money for states to buy RCV ready voting machines.
“(e) Ability Of Replacement Systems To Administer Ranked Choice Elections.—To the greatest extent practicable, an eligible State which receives a grant to replace a voting system under this section shall ensure that the replacement system is capable of administering a system of ranked choice voting under which each voter shall rank the candidates for the office in the order of the voter’s preference.”