The landmark case granted same-sex couples the right to marry throughout the U.S. in 2015. Why is it being questioned?

Supreme Court extended marriage rights to all same-sex couples, it will consider whether to take a case asking it to overturn the decision.

Nearly a decade after the Supreme Court recognized the right of same-sex couples to marry, the justices are once again being asked to revisit that ruling — this time by a former Kentucky county clerk who was briefly jailed for defying it.