... be ruled unconstitutional

「〜は違憲であるという判決が下される」。

The Guardianの記事、'Proposition 8, California's ban on gay marriage, overturned by judge'から。

'A ban on same-sex marriages in California has been ruled unconstitutional by a federal judge, marking a major turning point in a controversial debate that has divided America.

In a politically charged judgment, US District Court Chief Judge Vaughn Walker handed gay rights advocates a critical victory after a 13-day hearing.

Crucially, he also ordered that the ban, approved by the voters and known as Proposition 8, should be lifted immediately, allowing gay and lesbian couples to marry while the case moves to a higher court for appeal.

Proposition 8 supporters had argued to keep the ban in place pending the outcome of their appeal. In a 136-page ruling, Walker said the lawsuit challenging the ban "demonstrated by overwhelming evidence" that it violates due process amid equal-protection rights under the US constitution.

"Proposition 8 fails to advance any rational basis in singling out gay men and lesbians for denial of a marriage licence," he said. "Indeed, the evidence shows Proposition 8 does nothing more than enshrine in the California constitution the notion that opposite-sex couples are superior to same-sex couples".'