Legal immigrants have made many positive contributions to our nation in terms of economic growth and cultural heritage.  However, while we have benefited greatly from legal immigration, illegal immigration continues to put us all at risk.  Gaining control over our borders means protecting the American dream for all our citizens and legal immigrants.  There is a very real threat – not just posed by illegal aliens and drug smugglers, but by terrorists who target our very freedom.  Safe communities begin with secure borders.