From the page referenced above:
In 1989 Father Burke returned to Rome when Pope John Paul II named him Defender of the Bond of the Supreme Tribunal of the Apostolic Signatura, the first American to hold this position on the Church's highest court.
...
On July 8, 2006, Pope Benedict XVI appointed Archbishop Burke to the Supreme Tribunal of the Apostolic Signatura, where he had previously served as Defender of the Bond from 1989 to 1994.
Perhaps a jaundinced view, but IMO Second Assistant Trash Collector is a more significant (and more worthwhile) position than anything the USCCB has to offer! Too bad their loonier blatherings get picked up by the MSM and their decisions can filter down to the parish level.