Scouting must keep up with the times or face “the end of us as a national movement,” Robert Gates said.
Statement comes two years after the century-old organization voted to lift the ban on gay youths, and as group faces external pressure.
The now-questioned research suggested that canvassers going door-to-door could change minds.
Republicans failed to pass the bill before a midnight deadline.
Texas bill seeking to defy Supreme Court if it legalized same-sex marriage dies after clock runs out on new legislation.
The bill had been shelved earlier this year over objections from GOP women.
The measure, up for a vote this week, is a preemptive strike against a possible Supreme Court decision.
The term links police abuse victims to the broader legacy of racial injustice.
Pamela Geller, an outspoken critic of Islam, says she was exercising free speech.
The justices asked about polygamy, adoption and attitudes toward gays, among other questions.