This book, the fifth edition of The Law of Fundraising, is the culmination of an effort that began over 33 years ago to capture the essence of this body of law in one volume. The book reflects what many in the fundraising profession already painfully know: federal, state, and local regulation of fundraising just keeps expanding. When the book originated, as Charity Under Siege: Government Regulation of Fund-Raising (1980), it was less than an inch thick, yet it was thought the siege was on even then. The first edition of The Law of Fund-Raising (1991) (over 11/2 inches) encompassed far more law, as did the second edition (1996) (over 21/2 inches). Thus, each of these books contains more elements of law than its predecessor; there is no reason to believe this trend will be changing. Four unfolding developments alone guarantee more government regulation in the realm of fundraising: solicitations by means of the Internet, the redesigned Form 990, privacy concerns, and the recent emphasis on governance. Any lawyerwhose practice specialty is, like ours, tax, corporate, and other law as it applies to charitable and other nonprofit organizations, cannot avoid entanglement in the legal morass that constitutes federal, state, and local law regulating fundraising by charities. The representation of charitable organizations by the senior author started over 40 years ago (in 1969), and the lawof fundraising has been a significant component of my practice almost from that beginning.