https://arstechnica.com/tech-policy/2018/06/get-ready-for-more-sales-taxes-on-online-purchases/

State governments may require online retailers to collect sales taxes even in states where the retailers have no physical presence, the US Supreme Court ruled in a decision issued today.

The 5-4 ruling could clear the way for more states to require collection of sales taxes on products ordered online from out-of-state retailers.