Clashes have been reported along the California border between the Minutemen border patrol group and protesters.
A California professor reportedly kicked an aide to California State Senator Bill Morrow earlier this month in the border town of Campo, near San Diego. Several dozen anti-illegal-immigrant activists there have set up watch for migrants crossing the border. The aide tells California's North County Times he was unhurt in the clash, which came as he accompanied Morrow on a trip to support the Minutemen.
The Minutemen also report shots have been fired in recent weeks. Those incidents are being investigated. The Minuteman group began controversial patrols of the US border with Mexico earlier this year.