Immigration Law and Business provides definitive guidance with detailed citations to applicable laws, regulations, and agency memoranda on all of the key aspects of U.S. immigration law crucial to business. Immigration employment compliance and the tax aspects of immigration law are covered in detail. Cross-references to the hands-on Fragomen handbooks point readers to model forms, sample letters, and detailed, step-by-step tips. This treatise is a useful tool for business immigration practitioners, human resources professionals, and general practitioners who occasionally handle a business case. It also features: Nonimmigrant visas for business visitors and temporary workers Other nonimmigrant visas useful to business Labor certifications for permanent and temporary workers Permanent resident status for employment-based immigrants and investors Employer sanctions related to employment of unauthorized workers Work verification (I-9) rules Worksite enforcement and fraud investigations under IRCA and other programs Citizenship status discrimination under IRCA