A better understanding of how immigrants contribute to the U.S. economy is important. Few studies have examined how immigrant entrepreneurs contribute to total U.S. business ownership, formation, and income. This book examines the contributions of immigrant business owners and their businesses to the U.S. economy. The role of immigrants in high-tech entrepreneurship in the U.S. is also quantified. Among other findings, it was determined that nearly 1.5 million immigrant business owners in the U.S. represent 12.5 percent of all business owners. Moreover, the total business income generated by immigrant business owners is $67 billion, 11.6 percent of all business income in the U.S. In addition, although business owners from Mexico constitute the largest share of immigrant business owners, immigrants from around the world are sources of U.S. business formation, ownership and income. These findings indicate that immigrants make large and important contributions to business ownership, formation, and income in the U.S., particularly in some states and economic sectors. This book consists of public documents which have been located, gathered, combined, reformatted, and enhanced with a subject index, selectively edited and bound to provide easy access.