"Illegal logging is a pervasive problem throughout the world and generally is defined as the harvest, transport, purchase, or sale of timber in violation of national laws. Illegal logging can lead to degraded forest ecosystems and loss of biodiversity, impede economic development, challenge local governance, and contribute to crime and corruption. In regions with large tropical forests, such as the Amazon and areas in Central Africa and Southeast Asia, illegal logging is estimated to account for 50%-90% of all forestry activities, according to the International Criminal Police Organization (INTERPOL)."
CRS In Focus, IF11114
Congressional Research Service: https://crsreports.congress.gov/