Stores that are open to the public are considered “public accommodations”. They have to abide by civil rights laws, and the Americans with Disabilities Act. Your own private home is not open to the public, so you can make your own rules.

https://civilrights.findlaw.com/enforcing-your-civil-rights/discrimination-in-public-accommodations.html

“At the federal level, the Americans with Disabilities Act prohibits discrimination on the basis of disability in a wide range of places of public accommodation, including facilities that offer lodging, food, entertainment, sales or rental services, health care and other professional services, or recreation. State and local governments must eliminate any eligibility criteria for participation in programs, activities, and services that screen out or tend to screen out persons with disabilities, unless the government can establish that the requirements are necessary for the provision of the service, program, or activity. In addition, public facilities must ensure that individuals with disabilities are not excluded from services, programs, or activities because buildings are inaccessible.”