First of all, that passage in the pledge is total nonsense. People brought from Africa to this continent during slavery were very often separated from their families in the process in the first place. And, when slaves did marry, their wedding vows often read "till either death or distance do we part," making room for the possibility that one of the two might be resold. Of course, lots of marriages ended in death during enslavement, as many slaves died at quite young ages from any number of terrible diseases the resulted from very unsanitary living quarters. Even if one wants to say that being a married slave was better than being an unmarried slave, or having a mother and father as the child of slaves was better than not having both there, that in no way implies, as this pledge literally says, that babies under slavery were better off in their "household" (a one-room shack for slaves was their "household"
-really???) than black children born to a single parent now. To suggest that marital conditions or the lives of children under slavery were superior to the circumstances of, presumably, single black parents and their children now is an outrageous fantasy. And that fantasy is being overtly used in this document to criticize the social conditions of African Americans by implying that these are somehow the fault of the first black president. Signing a document that contains this kind of stuff is disgraceful.
