People in the US generally wear shoes in their homes. When they come home, they might take off their shoes if the shoes are uncomfortable, in the same way they might remove a bra or a tie, but it’s more for reasons of comfort rather than hygiene or preserving flooring. Guests are usually allowed to keep their shoes on.

In households of people who have recently immigrated, it’s different. It can also be a thing with people whose homes have a high aesthetic value. In general though, in the US it’s expected that the host requests that the guests remove their shoes, rather than it being a presumption.