The Supreme Court’s ruling did not automatically make this the law of the land for all 50 states. It was a South Dakota case, so the ruling just applied to South Dakota. However, since then, states have been jumping on the economic nexus bandwagon and enacting laws similar to those of South Dakota. States have long been searching for new ways to bring revenue into their state and the Wayfair case gave them a long-awaited opportunity to do so.
Source: taxconnections.com