SPARROWS POINT, MARYLAND — Most Americans and visitors to the United States encounter Customs and Border Protection agents when they enter or return to the country at land crossings or airports. But CBP also is responsible for inspecting goods leaving the country, which creates a nearly impossible assignment of trying to intercept all stolen automobiles being shipped out of the U.S. At the Port of Baltimore, CBP scrutinizes several hundred vehicles every day, and on average will find one illegal export — nearly all headed to a particular region of the world, says Adam Rottman, CBP’s director at the Port