Can anyone please give me one good reason the DNC shouldn't (ahead of the 2020 primaries, obviously) announce they won't seat delegates from any state that holds a caucus instead of a primary?
President Clinton will be up for reelection and shouldn't have a major challenger so the elimination of caucuses could be done easily and without any accusations of bias in favor of a particular candidate.
Iowa would throw a fit. It'd have to be a 'no caucuses on or after Super Tuesday' rule.
If Iowa throws a fit just threaten to not seat their delegates in the 2024 primary as well & give another state permission to go before them if they don't cooperate. Seriously, the DNC should have more power than the Iowa Democratic Party.
As long as Iowa and New Hampshire are competative in national elections, they will get to go first and they will get to use whatever system they want, unfortunately.