The article doesn't even support what he said. It's an opinion piece saying that because Democrats didn't want to vote for an unreasonably restrictive abortion ban that they support abortion up until birth. It says nothing about cleft palette or down syndrome. But I'll tackle the issue anyway.
I personally think the option for abortion until birth should be legal and up to the individual and their doctor. If there comes a point where say a mother will likely die during birth and there's only a 50/50 chance even the baby will survive, the mother should be free to make that decision in the moment. Decisions like those are never made lightly as much as conservatives would like to imagine they are, and the government should have no place in those decisions.