It is now quite evident that the two Children were from Ireland. Even wikipedia references these adoptions at the time of Roberts' confirmation, and indicates that the children were of Irish birth.
However Irish law 1) prohibits the adoption of Children to non-residents, and 2) also does not permit private adoptions, but rather has all adoptions go through a public agency.
Evidently Roberts arranged for this adoption through some sort of trafficking agency, that got the children out of Ireland and into that Latin American country, from which they were adopted, thereby circumventing two Irish laws -- entirely illegal, but perhaps quasi-legitimized by the birth mothers (two) transporting the children out of Ireland.
Undoubtedly Roberts and his wife spent a great deal of money for this illegal process, circumventing Irish laws and arranging for the transit of two Irish children from separate birth-mothers to a foreign nation. Come 2012, those two children have been with the Roberts' for roughly 10 years, since they were adopted as "infants".
Roberts is not deserving of any sort of respect here, and is only the latest example of people in position believing themselves above the law, beyond scrutiny and exempt from repercussion.
It all now makes sense.
The circumstances of these two adoptions explain not only why this would be overlooked by an overall sympathetic media, but also why a sitting Chief Justice of the U.S. Supreme Court would not want this information to become public fodder well into his tenure. Its release and public discussion would discredit Roberts as an impartial judge of the law, and undoubtedly lead to his impeachment.
This also explains why Roberts would have a means to be blackmailed, and why that leverage would still exist even after the institution of ObamaCare.
... And it has led to flipping the swing-vote on ObamaCare, which fundamentally changed the relationship between citizen and government, making us de facto property of the state, with our relative worth in care and maintenance able to be determined by the government. Essentially it was a coup without firing a shot, much less needing even an Amendment to the Constitution.
And it is consistent with Obama's Chicago-style politics, that has previously involved opening other sealed records in order to win election.