AbstractThe invasion of alien species is a major factor leading to the biodiversity crisis. Biological invasion is a major cause of biodiversity loss in the United States. The U.S. government is consistently paying more attention to invasive species now. On February 3, 1999, President Clinton signed an executive order(EO)-to coordinate a federal strategy to address the growing environmental and economic threat from invasive plants and animals that are not native to the United States. The President's order directs federal agencies to use their authority to prevent the introduction of invasive species and to restore native species. The EO directs establishment of an Invasive Species Council and prescribes the duties of the Council and federal agencies. The National Strategy for Invasive Plant Management, supported by the U.S. Department of Agriculture and other departments, proposes three national goals: prevention and control of invasive species' and restoration. This National Strategy provides three mechanisms: partnerships, education, and research for different groups and individuals. It requires a high level of cooperation and collaboration among them. Aggressive federal actions are already underway, including measures to prevent entry of invasive species, control and eradication of invasive species, outreach and education for the general public, and an increase in the budget for each fiscal year.