In the wake of Proposition 8’s passage, California continued to allow domestic partnership. This granted same-sex couples almost all state-level rights and obligations of marriage but did not apply to "federal-level rights of marriage that cannot be granted by states." Before Proposition 8 passed, UCLA's Williams Institute on Sexual Orientation Law and Public Policy projected in June 2008 that about half of California's more than 100,000 same-sex couples would wed during the next three years and 68,000 out-of-state couples would travel to California to exchange vows.