[Cross-posted at Hatewatch.] A self-described coalition of antigovernment groups is hoping to organize yet another attempt at shutting down the U.S.-Mexico border at major commercial crossings this weekend, calling the event “Shut Down All Ports of Entry”. Previous attempts at shutting down traffic at key border crossings this spring have ended in spectacular failure—notably radio host Pete Santilli’s attempt to shut down the crossing in Tijuana with bikers, as well as the “Border Convoy” last month, which culminated in a only a brief interruption at Brownsville, Texas. But this particular attempt, scheduled to take place Saturday, has set off warnings among law enforcement personnel, including a local sheriff’s office in Texas and Border Patrol officials, who say they are prepared for just such an attempt.read more