Denying entry : opportunities to build capacity to prevent the introduction of invasive species and improve biosecurity at US ports
Trade and travel are the primary drivers of biological invasion both into and within the United States, and prevention measures have been identified as the most cost-effective means of minimizing the introduction and impact of invasive species. A recognized gap in the US governments knowledge of the role that trade has played in the introduction of invasive species into the US led to a study undertaken by the US Environmental Protection Agencys Office of International Affairs and IUCN.