The Texas National Guard has seized control of a park at the U.S. southern border and is now blocking Border Patrol from entering the area — part of an effort to stop the surge of illegal immigration into Texas and a move likely to significantly increase tensions between Texas Gov. Greg Abbott and the federal government. The state government has taken control of Shelby Park in the city of Eagle Pass, Texas, which has been at the center of the migrant crisis that has engulfed the U.S. border. Authorities have now set up razor wire and fences to block off...