SAN DIEGO - As the flood of illegal immigrants at the southern border slowed to a trickle, agents shifted gears. Now, they're focused on seizing drugs - in record amounts - as the border is more secure than ever, officials told The Epoch Times.U.S. Customs and Border Protection (CBP) took The Epoch Times behind the scenes at the border between San Diego and Mexico - home to the San Ysidro Port of Entry, the busiest land border crossing in the Western Hemisphere.The San Diego sector, patrolled by thousands of federal officers, encompasses more than 56,000 square miles. That includes 60...