Since the U.S. walked out of Durban I in disgust (along with Israel) and rejected the Durban I Declaration, joining negotiations now means agreeing to its provisions for the first time.
Joining a new network means setting up a new profile from scratch and having to trawl that network for people who might already be your friends on another network.
The move means stability for all Notre Dame sports and has some familiarity to Irish fans, with Syracuse and Pittsburgh joining the Irish in moving to the ACC next season and former Big East teams Boston College, Miami and Virginia Tech already part of the ACC.