Yes, but voting is up to the States. They're free to adopt RCV, as we have here in Maine. Or ban it, as in five other States.
But only Congress can repeal the Apportionment Act of 1929.
The 118th Congress is on pace to pass the fewest acts ever. Will they hit double digits?
https://en.wikipedia.org/wiki/List_of_acts_of_the_118th_Unit...