No need to make it illegal. Votes can't be sold because they can't be confirmed (it's anonymous). That's not what they are talking about here. They are talking

No need to make it illegal. Votes can't be sold because they can't be confirmed (it's anonymous). That's not what they are talking about here. They are talking about representative votes and yes, it is illegal to buy/sell congressional votes. It is also not private, just like every other Western/Democratic representative government.