IRVING, Texas — Caught in an ideological crossfire, the Boy Scouts of America is delaying until May a vote on whether to ease its policy of excluding gays as Scouts and adult leaders. Any eventual decision is likely to anger major constituencies and worsen schisms within Scouting.

The delay, which the Scouts attributed to “the complexity of this issue,” was announced Wednesday after closed-door deliberations by the BSA’s national executive board. Under consideration was a proposal to ease the longstanding ban on gays by allowing sponsors of local troops to decide for themselves on gay membership.

As the board met over three days at a hotel near Dallas, it became clear that the proposal would be unacceptable to large numbers of impassioned Scouting families and advocacy groups on both the left and right.

As much as the iconic youth organization has argued for the freedom to teach its own values to American boys, it is now deeply entangled in the broader cultural and political conflicts over such issues as same-sex marriage and religious freedom. Tilting toward either side will probably alienate the other, and a midway balancing act will be difficult.

Gay-rights supporters contend that no Scout units anywhere should exclude gays, and vowed to maintain pressure on the BSA’s corporate donors to achieve that goal. Some conservatives, including religious leaders whose churches sponsor troops, warned of mass defections if the ban were even partially eased. They urged supporters to flood headquarters with phone calls.

“In the past two weeks, Scouting has received an outpouring of feedback from the American public,” said the BSA’s national spokesman, Deron Smith. “It reinforces how deeply people care about Scouting and how passionate they are about the organization.”

The BSA “needs time for a more deliberate review of its membership policy,” Smith added. He said the board would consult with sectors of the Scouting movement and prepare a resolution to be voted on by the 1,400 voting members of the BSA national council at a meeting during the week of May 20 in Grapevine, Texas.

The organization had announced last week that it was considering allowing Scout troops to decide whether to allow gay membership, ensuring that the executive board meeting would be in the national spotlight.

Learning that a decision would be deferred, gay-rights leaders assailed the BSA. “Every day that the Boy Scouts of America delay action is another day that discrimination prevails,” said Chad Griffin, president of the Human Rights Campaign. “Young Americans, gay and straight, are hurt by the inaction associated with today’s news.”