In a 6-3 ruling, the U.S. Supreme Court has upheld the nationwide tax subsidies under President Barack Obama's health care overhaul, in a ruling that preserves health insurance for millions of Americans.

In the event the U.S. Supreme Court votes to end health insurance premium subsidies, Families USA has broken up the potential loss in states that don't have their own exchanges.  The head of the group says such a ruling would cause premiums to skyrocket.