Anyone want to summarize the bill? I'm not sure how a federal tax is going to help the states since it seems highly unlikely that the federal government would

Anyone want to summarize the bill? I'm not sure how a federal tax is going to help the states since it seems highly unlikely that the federal government would hand revenues over to the states. Also anyone know the constitutionality of this? I can make arguments that it is discriminatory taxation of interstate commerce as well as it not being. Would I get double-taxed if I bought online from a retailer in your own state? Does it apply only to online or also to mail-order and phone orders?