HOUSTON, Texas—Militia groups in Texas and across the nation are responding to the Texas Border Surge announced Wednesday night by the offices of the Governor, Lt. Governor and Texas House Speaker. An announcement was made on several new media outlets including Facebook. The alert to the civilian militia groups, which includes many groups who showed up at the Clive Bundy ranch in Nevada, calls on all able bodied militia members to converge on the Laredo sector of the Texas/Mexico border. A man who identified himself on a national conference call as “Ruthless” said their objective it to “put up a...