 Billionaire Elon Musk waited into the U.S. immigration debate on September 28, paying a visit to the Texas border with Mexico to meet with local politicians and law enforcement and obtain what he called an unfiltered view of the situation.Musk's visit came as thousands of migrants have ventured to northern Mexico in recent days on freight trains and buses, then crossed the U.S. border into Texas, Arizona and California in an upswing in arrivals of people seeking asylum in the United States Musk visited Eagle Pass, where the throngs of migrants have for several days been waiting across the Rio Grande near a railroad bridge in Eagle Pass, undeterred by coils of razor wire placed along the river banks by the Texas National Guard.