LAGO VISTA -- A civil liberties group is asking the principal of a Central Texas high school to reconsider a policy prohibiting students attending the prom from buying tickets for same-sex guests. "It's supposed to be a special night that you're supposed to share with people you like to be around," said Sherrell Ingram, 16. "If they're setting limits on who you can and can't bring just because of their sex, it's not going to be great anymore. It's not going to be special." Ingram, a junior who helped organize the prom, noticed a sign detailing the rule against same-sex...