Full faith and credit for abortion means a citizen of one state cannot be prosecuted by that state for getting an abortion in a state that permits it. Home “marriage” is harder, and will likely require separation of religious marriage from government unions. The term “marriage” belonged to the churches long before 1776.
The Citizens of each State shall be entitled to all Privileges and Immunities of Citizens in the several States.I'm assuming that this means that the citizens of each state are entitled to all federal privileges and immunities, not each other states' privileges and immunities, since this the Constitution of delegated federal powers. Each state has its own constitution that governs the people of the respective state.
-PJ