Surrounded by sleigh bell-ringing Santa Claus impersonators, Gov. Rick Perry on Thursday signed a law protecting Christmas and other holiday celebrations in Texas public schools from legal challenges—but also stressed that freedom of religion is not the same thing as freedom from religion. It was a serious tone for an otherwise fun bill-signing and should bolster the governor’s Christian conservative credentials before he travels to Washington for the Faith & Freedom Coalition’s “Road to Majority” conference with the likes of tea party darlings and U.S. Sens. Marco Rubio of Florida, Kentucky's Rand Paul and fellow Texan Ted Cruz. Dubbed the...