There are 50 states, meaning there are 50 different sets of state charity registration and compliance regulations:  https://trust.guidestar.org/state-charity-registration-compliance-and-regulations?utm_campaign=GuideStar+Newsletters+-+Individuals&utm_source=hs_email&utm_medium=email&utm_content=36868515&_hsenc=p2ANqtz-9t6f1jfydpmxX7F0CqwmVfYQM6b0Mw0nIexCEyEqAfe7PS-p3DWzkBR_8CEEsBEKXgvhg5nCfR-OreVoFl_f6qqDzMcSwrMBMqUYUADmNO-3jpczg&_hsmi=36868515