Global trade in illegal wildlife is a growing illicit economy, estimated to be worth at least $5 billion and potentially in excess of $20 billion annually. Some of the most lucrative illicit wildlife commodities include tiger parts, caviar, elephant ivory, rhino horn, and exotic birds and reptiles. Demand for illegally obtained wildlife is ubiquitous, and some suspect that illicit demand is growing. International wildlife smuggling may be of interest to Congress as it presents several potential environmental and national security threats to the United States. Threats to the environment include the potential loss of biodiversity, introduction of invasive species into U.S. ecosystems, and transmission of disease through illegal wildlife trade, including through illegal bushmeat trade. National security threats include links between wildlife trafficking and organized crime and drug trafficking. Some terrorist groups may also be seeking to finance their activities through illegal wildlife trade, according to some experts. Wildlife source and transit countries may be especially prone to exploitation if known to have weak state capacity, poor law enforcement, corrupt governments, and porous borders